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    General character guesses 

Sprig and his younger sister are orphans raised by their grandfather or great-uncle.
  • Beside Sprig, there are two other amphibians prominently featured in the intro: an elderly red frog and a purple tadpole with a yellow bow on her head. The tadpole is likely Sprig's sister, and the old frog is an obvious parent figure, but looks too old to be their father. Since it's a Disney show, the old frog is probably an elderly relative who takes care of the two orphan siblings.
    • It has now been confirmed that Hop Pop, the elderly red frog, is Sprig's and Polly's grandfather, and that he's the one taking care of them. The season 2 episode "Hopping Mall" reveals that Sprig and Polly's mother died when they were much younger, so much that Sprig does not even remember what she looks like. The fate of their father is still unknown.
    • The season 2 episode "After the Rain," reveals that Sprig and Polly's parents were both killed when Herons attacked Wartwood a few years before Anne arrived.

Anne has at least one sibling
But said sibling is aloof and distant from her.
  • Jossed. According to the sibling fight episode, Anne is an only child.

At least one of Anne's friends will turn out to be a False Friend
The opening shows Anne with two other girls before they're teleported, and the picture shown later on shows that they are at least a little bit close. However, going by the synopsis saying Sprig gives Anne her "first true friendship," then one of Anne's friends, if not both of them, will turn out to never have been actual friends with her, or their relationship will reveal their "friendship" wasn't quite what Anne thought...
  • Anne describing the concept of friendship to Sprig in "Best Fronds" suggests that she had a lot of Toxic Friend Influence from Sasha and Marcie, supporting this theory.
  • In "Prison Break", Sasha shows she really cares about her friends, even though she is quite manipulative in her methods. Later episodes show that she manipulates Anne emotionally and is not that much of a true friend to her despite genuinely caring about her.
  • Marcy is shown to be much different than Sasha, expressing genuine excitement upon reuniting with Anne.

If Anne and her friends meet again, it'll be as enemies.
Again, the synopsis mentions Sprig's Anne's first true friendship. Therefore, if they meet Anne's friends again, things will go south and they'll become enemies, either for the rest of the season or the series.
  • Confirmed with Sasha, jossed with Marcy

Anne is a False Friend, or has a twisted idea of what friendship is
yet again, the synopsis mentions Sprig's Anne's first true friendship, but this doesn't mean the other girls are her false friends. Anne is described as "self-centered" and with a sense of adventure, so it's quite possible that her idea of friendship, assuming it's a bizarre idea, is probably going on an adventure together, not realizing that it runs a bit deeper than that.

A piece of Anne's character arc will deal with her self-centeredness
Whether she acts like It's All About Me or simply doesn't change the way she acts once she arrives, part of Anne adjusting to the world of Amphibia will be to either tone down, or outright discard her self-centeredness, unless she wishes for those she considers friends to get hurt.

Anne's two friends from the human world will become antagonists
Assuming they actually do make the trip to Amphibia with Anne, one or both of them will become the villain(s) of the series, paralleling Anne becoming a hero. Possibly, they land in a more distant part of Amphibia, and after undergoing a (possibly offscreen) Start of Darkness, they start conquering and enslaving the the frogs and the wildlife, essentially becoming warlords. They probably won't be revealed until the end of the first season or the start of the second, and either they don't realize what they're doing is wrong, or they revel it. Alternatively, since there are two of them, one could be convinced by Anne and Sprig to stop while the other is too far gone.
  • Sasha seems to be going down this path, having teamed up with Grime, who claims he wants to "restore order" to the valley.
  • Jossed with Marcy in season 2.

A character will be voiced by Ashley Tisdale.
Referencing Ashley and Brenda being co-stars on The Suite Life of Zack & Cody and how Brenda guest-starred in Phineas and Ferb as a onetime rival to Ashley's character, Candace.

Anne will be shown as a character with low self-esteem and have a hard time making friends.
Anne is desperate to make friends that she will be pressured by them to do bad things, such as stealing. In one of the new trailers, it features Anne inside a shop picking up the chest that will fate her to Amphibia. Anne has a look of uncertainty about what she's doing, before glancing over to the window where her two "friends" outside are giving her the thumbs' up. This could explain why Sprig is described as her "first real friendship".

Mayor Toadstool will be a villain.
While he looks like a friendly fellow, he'll be a Corrupt Politician who's a Villain with Good Publicity.
  • Alternatively, he'll simply be one of the more benign versions of Mayor Pain; he has the best intentions of the town at heart, and means well, he just doesn't do well.
  • Early in the season, he seems to be somewhere in-between: a Sleazy Politician who is mostly doing it for the fame and fortune, and doesn't think highly of the people that voted for him.
  • In a later episode, he attempts to steal the tax money paid by the town's people and reports to his superiors that the people didn't pay, causing troops to come down and shake the people down for their belongings.
  • In the season 1 finale "Reunion", he ends up joining the frogs. If only to escape Grime's wrath for his failure to keep the frogs of Wartwood in their place.

Anne and friends were summoned to Amphibia for a purpose.
At the end of the intro, behind the title, there's a bas-relief that seems to depict three humans facing off against a large, frog-like monster wielding a fireball. Assuming this isn't an account of past visitations by humans, then it's possible this show will pull a The Chronicles of Narnia and have a (now long-forgotten) prophecy along the lines of "three humans will appear to defeat a great evil".

Anne's friends have been captured.
During the intro, in the shot with the photo, an imposing, tower-like fortification is seen in the background during the lightning flash. Assuming this show has a Big Bad, then that tower is their homebase, and for some reason (possibly related to the above prophecy), they've kidnapped Anne's friends.
  • The end of "Best Fronds" reveals the Arc Villain and one of Anne's friends is locked up.

Hop Pop's Non-Mammalian Hair will be given a justification.
Either he's a hairy frog, or they are gills (they are at the right position for a tadpole's external gills, although adult frogs never have them).
  • It seems that in the world of Amphibia, it is normal for frogs to have Non-Mammalian Hair, without any further justification.

Anne would enjoy the taste of Pain Peppers
  • Her family runs a Thai restaurant, and Thai food can get pretty spicy, so chances are Anne is used to spicy food.

Anne will eventually become more and more amphibious as the series go on.
  • The foods she eats are slowly making her more and more frog-like.
    • Note that by "Toad Tax", Anne has started to like the insect food that previously disgusted her. She attributes it to her Going Native, but perhaps it's something more....

Toadstool and Grime are related.
Both of them are large, bulky toads, and neither of them is a very nice person.
  • The only possible relation between them is that he was one of the toads Grime installed to run Wartwood.
    • And if Toadstool has always been a screwup in the family, then his failure to keep the frogs in their place was the last straw. Another reason why Toadstool side with the frogs.

Emma the Newt was also sent to Amphibia via the Calamity Box
Emma is basically Anne's predecessor, as they have the same hairstyle, and they're both non-frogs who settled down with the Plantar family to become an honorary Plantar. Maybe Emma was also sent to Amphibia using the Calamity Box. There don't seem to be any other newts who live there.
  • Although it's not impossible, there's at least one more newt in Wartwood, Mr. Duckweed.

Polly's growth was stunted at some point
She’s actually older than Sprig (maybe around the same age as Anne?) but has some kind of disorder that’s left her stuck as a tadpole.
  • Unlikely. In "Civil Wart", for example, Hop Pop refers to Sprig "older brother" and Polly as "little sister". If anyone, he'd know if it's the other way around.
  • Jossed. As of True Colors, Polly now has her legs.

Toadstool's name is a Meaningful Name on more than one level
While "toadstool" is a type of mushroom, and it's a play on his species, it also means he is the "Toads' tool", i.e. a tool in the ploy of the toads of Toad Tower to rule the valley.

The mysterious Newt woman at the Bizarre Bazaar is Emma the Newt.
She seems to be the only one besides Hop Pop who knows of the Music Box, and because of her tail, she’s obviously a Newt (or Salamander). She also mentioned traveling a lot, having “seen it all” like Emma. She may look a little different now , but that could just be attributed to age and/or being exposed to dark magic.

Sasha comes from a dysfunctional family, a la Pacifica Northwest
Throughout the first season, the snippets Anne tells regarding her "friendship" with Sasha indicates that Sasha takes advantage of Anne regularly; in "Prison Break," Sasha herself flat-out admits that she has experience with manipulating people. And yet, despite this, Sasha still seems to genuinely view Anne (and presumably Marcy) as her friend, with her ultimate goal being to reunite with her friends and go back home. So how can Sasha treat Anne the way she does, and yet still consider them close friends? The same reason Pacifica Northwest was initially an Alpha Bitch: a family that has always presented themselves as above everyone else, and were willing to use unscrupulous means to keep it that way, crushing anyone (including other family members) who tries to take them down. If Sasha grew up around family that put an emphasis on taking advantage of others to get what you want under the guise of "friendship," of course she's going to think that's how people normally treat each other. She's not mistreating Anne just to be a JerkAss; she's mistreating Anne because she genuinely believes that's how friendship works (hence her legitimately confused reaction once Anne starts standing up to her). Meanwhile, Anne was able to live with a loving family (her own family and the Plantars) that allowed her to see what being a friend really means, which ultimately led to her being able to do what she couldn't do in her world: stand up to Sasha.
  • True Colors further raises implications on this with Sasha not even thinking or mentioning them when preferring to stay in Amphibia to rule it.
  • Froggy Little Christmas implies her parents are no longer together as Anne has to write them separate letters. The reasons for why they are separated were never revealed, however.

Marcy also came from a dysfunctional family
While they are not necessarily Abusive Parents, they were strict with her schooling and possibly not averse to corporal punishment. They also spend little to no time to bond with her. Either way, Marcy fears them and is willing to run away from home forever.

Polly will age as the series progresses
To compliment the passing of time Anne has been stuck in Amphibia as well as the general Character Development. In Season 2, Polly will have legs and struggles to adjust to them; Anne helps her through it by comparing it to her own experience with puberty. If a third season rolls around, Polly will resemble Sprig and the other frog children.
  • The Season 2 finale confirms that Polly grows legs.

What really happened to Sprig and Polly's parents?
They opened the chest and were transported to Earth. That's why Hop-Pop is so paranoid of the chest, and why Sprig and Polly have been left in his care.
  • JOSSED they were killed by herons.

Polly and Sprig are adopted
  • Evidence for this: Hop Pop takes in Anne and treats her like one of his kids. Hop Pop is soft-hearted despite his gruff exterior and saw two orphaned babies that lost his parents due to Amphibia being a Death World. He never told them because he wants them to be part of the family. Also, he needed the extra farm hands.

Most adults in Wartwood are widowed
  • Most of the town's adults appear to be single or having an unspecified martial status. Considering how they are living in a Death World, the Amphibians are probably used to losing their spouses and other loved ones in sudden and brutals ways. In addition to the obvious examples of Hop Pop and Sylvia, this likely includes Felicia Sundew and Mr. Flour, but maybe also a lot of characters whose family status is unknown, like Mayor Toadstool, Leopold Loggle, Sadie Croaker, Stumpy, Wally, Duckweed and Toadie. If you look beyond Wartwood, the list might even include Grime.

Hop Pop isn’t welcome at the Bizarre Bazaar.
The reason he only shows up in a disguise is to make sure those who run the Bizarre Bazaar don’t recognize him, as he is considered a danger and rival to them for his knowledge of the Calamity Box.

Sasha does not just view Grime as a friend.
She views Grime as a friend and a father figure. She will slip up and accidentally call Grime Dad.

Sasha has romantic feelings for Anne.
And she's suppressing it because she feels it doesn't fit with her image and is suffering from internalized homophobia.

Sasha was abused in the past
Her manipulative and possessive nature is her way of taking back control.

King Andrias might actually be a misdirect.
Everything seems to be setting him up to be the final villain in the entire show so far, but it's almost getting to the point of being too obvious. It might be possible that Matt Braley and the rest of the Amphibia team might be using Andiras as a red herring, and the true villain might be someone like Lady Olivia (she does kinda have a rather antagonistic edge sometimes) or maybe even Marcy if they really wanna throw us off.
  • Alternatively, he could wind up being a more complex figure, more of a Well-Intentioned Extremist than just a tyrant. While he may fully intend to keep up his oppressive rule over Amphibia, he may see that as the preferable alternative to whatever chaos could result otherwise. He might even be working behind the scenes to liberalize the Fantastic Caste System, given that we've seen cases of frogs being in or ascending to the upper/wealthy class — Ribbitvale, Hop Pop's friend Sal, etc. It all depends on how the creators decide to play things.

King Andrias is somehow related to Emma the Newt
  • Considering his demonstrated Complexity Addiction and love of games, Andrias may have some sort of link to the newt friend the Plantars adopted in the distant past. His joy at meeting the Plantars in "The Plantars Check In" may very well have been genuine, akin to meeting distant relatives or long-lost family friends.

Andrias has deep-rooted abandonment issues that the mysterious Beast preyed upon.
Given that Andrias was devastated about what happened after his friends supposedly abandoned him, his line in "True Colors" about friends hurting you when they leave, and his connection to the Beast, it's likely the Beast preyed upon any such insecurities he had, driving him to be the evil newt he is today.Additionally, Andrias is acting as an Unreliable Narrator, and his friends either didn't intentionally abandon him, or did so for more altruistic reasons. Consequently, he has a need to control friends that mirrors Sasha's relationships with Anne and Marcy.

Marcy will become a Mad Scientist as an adult

Sasha, Anne, and Marcy all identify as somewhere in the LGBT spectrum.
This is most likely to just be implied in the show and even then, the three of them have a lot of subtext already.

The Plantar were once among the highest ranks of Amphibian Society
The P on sign on the front of the Plantar’s house, the back of the Plantar’s Fwagon, Hop-Pop book and the banners seem in Polliana’s room underearth the in “Family Shrub” look almost like some kind of family crest. Plus, one of the two former friends of King Andrias seen in his Flashback in “True Color” is a frog that looks like female version of Sprig. Perhaps the Plantars were once nobility or even the co-rulers with Andrias (and the Toad who was also seen in the flashback), but the lose their rank after Lady Plantar betray Andrias and possibly a change in the political structure of Amphibia, but mange to keep their coat of arms.

The female frog that was Andrias' friend wrote the book that Marcy learn about the Calamity box from.
The book is titled Dr.P’s Extraordinary Guide to Magic & Mystery. And, assuming she is related to the Plantar, it is possibly that she shares their last name. This means she just might be the titular Dr.P in the title. Dr.Plantar wrote it sometime after ending up on Earth or decided to settle down there after travelling though dimeson, much to a similar vibe to Ford.

The Toad who was Andrias' Friend is Barrel, of Barrel’s Warhammer
He was a famous warrior and his Warhammer is pretty much the Toad version of the Excalibur, so it is not unlikely that the king would not at least have some respect for him. Plus, with that glowing writing on it and rocket boosters in the back, his Warhammer is clearly connected to Newtopia’s Lost Technology very well. Perhaps it has a gift from Andrias.
  • "The Core & The King" confrims Barrel was indeed the toad friend of Andrias. No word on the warhammer, though.

King Andrias and his 2 friends were the previous chosen 3 by the Calamity Box.
In addition, as the toad's pupils were red in a way never seen on any other toad, they were chosen by the magenta gem. The frog, who looks like she could be an ancient Plantar, was chosen by the cyan gem; Andrias was chosen by the green gem. At the beginning of the series, the current 3 chosen were teleported to the vicinity of the previous chosen or their descendants or relatives, which explains their placement and the affinity of their gems with their initial locations.:Jossed. They were not chosen by the Calamity Box, and the gems were fully colored in the flashback.

Maggie and Gabby are sisters.
They look very similar and have similar names, so they could be related.

Bonus point if the reason they're mortal enemes is because of a particularly bad break up.

Olivia is Andrias' secret daughter
Bear with me here. Olivia said she's lived in the palace since she was a child and her mother was Andrias' advisor before her, but she has yet to mention a father. We know Andrias has lived for a thousand years, so he could easily have produced children older than any seen character. Perhaps Andrias had some kind of relationship with Olivia's mother and she became pregnant, but Andrias, for whatever reason, didn't want to claim her in any official way. That could also explain why she took over her mother's position; Andrias wanted to keep his child close to him but in a way that wouldn't invite any questions. Olivia will discover this by the end of the series and, once Andrias is defeated, will use the revelation of her paternity to become queen.

The frog and toad who betray Andrias did so to stop his evil plans
Andrias claims that he was betrayed by his friends and that this betrayal coincided with the loss of Newtopia's prosperity and the Calamity Box. Maybe the frog and toad realized how evil Andrias truly was and so they stole the Calamity Box and went into hiding. Eventually, they met Mother Olm, who prophecized the coming of Anne, Sasha and Marcy and how they would be the saviors who would defeat Andrias. Going off this, they traveled to Earth, hid the Box there and created the vase with the secret message so that anyone who found it would know to seek out Mother Olm. They then went into hiding, either on Earth or Amphibia.
  • Confirmed in "The Core & The King"; Leif (the frog) did indeed take the box after seeing a vision of what would happen if Andrias invaded Earth and Andrias refusing to heed her warning. As she escapes, she mentions going to see the olms to asks for help. While we don't see the meeting, Andrias' father makes it clear the Box had left Amphibia and references the prophecy. We also learn in the same episode that Leif used to communicate with Andrias through secret messages wirtten in invisible ink, most likely making her one whoplaced the messages in the three temples and the pot found on Earth.

Loggle is a frog-axolotl hybrid
He lives in a village of frogs despite being an axolotl. And unlike the axolotls in Newtopia, he lacks a tail.

Anne and Sasha's falling out was due to relationship drama High School
I thought it was extremely weird to think that after everything, the two members of the trio who still live in the same city grew apart naturally. We know they didn't have a fight or Sasha didn't regress to her older bully role. So my theory is that one of the girls, most likely Sasha finally made a move on the other and their feelings weren't totally reciprocated. This made things incredibly awkward, so they both opted to silently drift away.

Anne is the embodiment of all of King Andrias’s regrets, and the Calamity Gems transferred that regret into the human realm and created a human, thus giving birth to Anne
King Andrias draws a lot of parallels to N, like how they were betrayed by the woman they were closest to, and this caused them to become obedient to a tyrant, and be the one who would carry out said tyrant’s plans. N regretted this so much, that his regrets manifested into its own person: Noah, the game’s protagonist. This would explain why Andrias hates Anne so much, and why he’s so eager to kill Sprig. N hates Noah for being everything that he wasn’t, which is why, when given the opportunity, he doesn’t hesitate to use it to mentally break Noah and kill Mio (the game’s equivalent to Sprig).

    Setting and Plot guesses 

Like Kulipari: An Army of Frogs, Amphibia is set in a fictional alternate Australia
  • Given the diverse environments and some of the fauna (most notably the frilled lizard in the opening) this seems plausible.
    • Surprisingly, confirmed in one of the creator's Reddit posts. Amphibia is indeed their world's equivalent to Australia.

The beginning of the series takes place in mid-April 2017
  • In the beginning of "Reunion", Anne and Sasha are drinking Unicorn Frappuccinos, a Starbucks drink that was only available for a limited time. The drink was discontinued the same month it was introduced, ending on April 23.

Anne may be the only human in Amphibia, but others were able to go there before
Unlike Anne, though, they knew how to get back home. The last human before Anne to visit Amphibia sealed away all ways to be sent there for an unknown purpose.

Amphibia is the only landmass on the whole planet it is on
As a result, the name Amphibia applies to both the landmass and the planet.

Alternatively, there are other landmasses on Amphibia
Each one is home to another civilization of beings based on different animals. These civilizations are all so primitive and/or isolated that they've neither met nor interacted yet.

The plot of season one will be of the search for Anne’s friends.
They just seemed to disappear in the intro, and that photo of them together is rather ominous. After she gets used to living in Amphibia, Anne will work with Sprig and his family and friends to find them. Of course, that is, IF they made the trip to Amphibia with her...

The Chest's gems act as designators to the dimension the user wishes to travel to.
The chest has three gems: A blue one, a green, and a purple one, in that order. When Anne and the girls are transported to Amphibia, the chest glows green. Therefore, teleporting them to another location would cause the chest to glow that corresponding color.

Amphibia is Loompaland
A semi-tropical landscape populated by big, fierce creatures, and there's not much to eat besides insects. The difference between the Oompa-Loompas and Sprig's people is of course that the latter like eating insects, so they adjusted much better to the surroundings. Willy Wonka can obviously do magic, which is why he was able to travel between Amphibia and our world.

The music box is cursed
Anne shoplifted a music box, and then got sent to Amphibia. Maybe the music box is cursed to punish kids who do bad deeds. Anne did a bad deed by shoplifting, and then got banished to Amphibia. Her friends, Sasha and Marcie, did a bad deed by manipulating Anne into shoplifting the music box in the first place. They also got banished to Amphibia, where they are now prisoners of the Lord Of The Castle.
  • Worse. It's actually an Artifact of Doom called "The Calamity Box", thought to have been destroyed. It's basically like Pandora's Box where bad things happen if it is opened.

The gems on the music box gave the girls hidden magical powers.
You see how the gems went from blue, green, and purple on Earth to all white in Amphibia? When the box sent the girls to Amphibia, they each absorbed whatever magical power a different gem had, hence why Anne’s eyes briefly turned blue when fighting the red mantis. As for why they turned blue then and there, each girl’s respective gem’s magic will only be unlocked once they learned an important life lesson and grow as a person. Anne’s eyes glowing represents how she’s one step closer to changing her selfish ways and unlocking her powers. And why did they get these powers? The same reason they were sent to Amphibia if the carving that appears behind the title after the intro is any indication: to defeat a great evil. Once that purpose is fulfilled, they will have to give their magic back to the gems in order to return home.

At some point, Sasha will attempt to trade her freedom for Anne's capture.
It's already been heavily implied that Sasha is something of a False Friend to Anne, using her for her own benefit. Since the ending of episode 1B reveals that Sasha has ended up in Amphibia, and is being held captive by Grime, it's not a stretch to imagine that she will try to make a deal with her captor: offering to work with him to find and capture Anne in exchange for her freedom. Whether she will succeed, or whether Grime will uphold his end of the bargain remains to be seen.

Marcy will be a villain
This is a theory I've mentioned before elsewhere. Alternatively to the above theory. I think Marcie may turn out to be a villain. As it is possible that Sasha may not be totally bad considering she might intentionally be trying to protect Anne and Marcy from Grime (unless she just didn't know they were transported as well). Marcy however is the only one we have not idea of the location of. So perhaps she may be in a situation which allows her to gain more power while Anne and Sasha's circumstances will force them to grow.
  • Well, not so much Marcy, but it's already looking likely for Sasha, who has decided to join Grime in taking over the valley, and makes it clear she enjoys this.
  • Semi-confirmed in Season 3, with Marcy becoming an unwilling villain.

Anne and friends were running away from home
Think about it, Anne has stuff like toenail clippers and extra shirts on hand, when there’s no way she could’ve known she needed them before getting transported. Perhaps one of them was suffering some kind of traumatic experience, like abusive parents, and pressured her friends into running away from home with them. Would give them some extra depth, and make them more sympathetic, even if the two friends are supposed to be toxic and presumably villains.
  • True Colors josses this for Anne and Sasha but confirms this for Marcy.

Time passes differently on Amphibia than it does on Earth
Anne is worried that she'll be stuck for two months, but what is the hint that it won't be two months Earth time? Her phone. Given how much she was using it before "Taking Charge," it should have run down much sooner than a matter of weeks. So when Anne goes back home, or if she does, it will only have been a few hours. But Anne will have felt two months older from the experience.
  • Jossed. The same amount of time passed between Earth and Amphibia while Anne was in the latter.

Sasha and/or Marcie will blame Anne for their predicament
In true Never My Fault style, one or both will claim it's because of Anne that they got trapped in Amphibia (even though they made her steal the music box in the first place), and will use this to try and manipulate Anne into leaving Wartwood and her real friends behind.
  • Jossed as of "True Colors" - the blame is solely on Marcy, which she accepts but tries to spin it as a positive.

Just like Anne is with frogs and Sasha is with the toads, Marcy is living with the newts.
In "Fiddle Me This", Wartilda mentions her daughter got into Newtopia University, and in "Combat Camp", the train was carrying the ruby for the Newtopian Treasury. We'll eventually see the city of Newtopia and learn that Marcy has been living there.
  • Marcy can be seen wearing a robe in the poster and Season 2 opening. When we see an illustration of a newt from Newtopia in "Handy Anne", the robe they’re wearing resembles that of Marcy’s, so this WMG May have some merit.
  • Confirmed as of Season 2.

Amphibia is on Earth All Along.
Instead of being in Another Dimension, like most have assumed, Amphibia is a Lost World on Earth, hidden from Humans for millennia by the mountains surrounding it. It would explain why Anne’s phone is still operating, and would make for an interesting twist.
  • Depends how scientific the writers want to be. Giant insects like we see in Amphibia couldn't exist on our world today; they require an atmosphere with a far higher oxygen content to grow large.

Anne and the Trio are not from planet Earth
  • Not one of them has ever used the word "Earth" when referring to where they're originally from. It's always "another world," "Home" or more recently "Another Dimension." We've seen enough Human Aliens and worlds that are suspiciously similar to our own with slight differences. So the presence of schools, pizza, birthdays and whatever else doesn't necessarily discount the theory. Another clue might exist in Anne's response to Sprig when asked what a disc is. She replies "I'm from another dimension, not the nineties." Instead of "I'm from Earth, not the nineties."

The Calamity Box is the MacGuffin for Lord Grime
According to Hop Pop's book, the Calamity Box was supposed to be destroyed and is dangerous. But then how did it end up in a thrift shop? Because it wasn't destroyed; it can't be. But it can be teleported. Lord Grime wants it because the box when activated can chaos at the owner's beck and call. Grime wants it because he craves either the power or wants to travel to the human realm and exploit it. Grime may not know what humans are exactly since he condescendingly tells Sasha "There are more of you," but he knows the box was with them. So he's eager to find out which human has the box.

Marcie will appear in the closing moments of season 1 ala Della Duck on Ducktales 2017
  • Jossed. Not only does she not appear in the season 1 finale, she doesn't speak all season.

Anne will end up having to fight Sasha
Anne will very likely confront Sasha for joining Grime as his second-in-command threatening innocent frogs, and they will have a personal one-on-one battle. Sasha being a cheerleader and Anne being a varsity athlete, it will make for an interesting battle.
  • Confirmed. Watch the season 1 finale "Reunion".

There will be an episode about Polly going through metamorphosis
In an aversion of Not Allowed to Grow Up, there will be a whole episode focusing on Polly growing out of her polliwog stage and growing limbs. The whole episode will be played out as a great big puberty allegory. It will happen fairly late in the series, not earlier than the second half of Season 2.

Domino 2 will come back for a Big Damn Heroes moment.
During a fight between The Frogs and the Toads, Anne will end up surrounded by Toads in the forrest. This gets the attention of a nearby Coastal Killapillar. The Killapillar sees the Toads surrounding human, gets mad and scares the Toads away with a mighty roar. He Killapillar then walks over to Anne and drops a cat toy. This reveals that it's Domino 2 and after a brief reuinion, Anne spends the rest of the fight riding her Coastal Killapillar into battle.

"Lizard" is actually a racial slur for newts.
Lizards in Amphibia, such as the frilled lizard in the intro, are non-sapient beasts. However, newts like Emma and Duckweed are sapient, because they are amphibians despite their lizard-like appearance. Thus, calling them "lizard" is somewhat similar to calling a human "ape" or "monkey". What makes it even worse is that newts are a racial minority compared frogs, at least around the Wartwood area. Anne was really Innocently Insensitive when she called Duckweed a lizard.

Sprig is pulling a What the Hell, Hero? behind Anne's back so she won't be able to go back home and leave him behind
Did it feel like Sprig was being more reckless than usual in "Trip to the Archives"? It was as if he was being goofier and more irresponsible in order to prevent any possible info for how Anne could get home. There will be an episode showing a scene of him doing whatever it takes to prevent his best friend from leaving, and sooner or later he'll be found out, thus resulting in Anne wanting to end their friendship out of anger.

The Calamity Boxes are why Amphibia is such a Death World.
Given the fact that these thing seem to be able to bring people from other worlds to Amphibia, it's possible that they could do the same for non-sentient animals as well, hence the wide variety of beasts and monsters in Amphibia's ecosystem. It could also be why they were all destroyed; after a while, everyone banded together to destroy them all and the knowledge on how they were made, whilst their original creator(s) were either slain or fled/exiled to the most distant corners of the land.

Hop Pop had some traumatic experience with the Calamity Box
Clearly, Hop Pop is reluctant to share anything about the Calamity Box with anyone, even anyone who'd know about it. Maybe Hop was among the frogs who took part in attempting to destroy the box, which almost killed him, but took the lives of his friends and loved ones, leaving him and a few survivors.
  • Alternatively, the Calamity Boxes are such a taboo subject, that mearly asking about them is enough to cause problems, let alone owning one. If that's the case, than it's more than likely that Hop Pop's merely concerned about a Torches and Pitchforks scenario.

Anne's bird transformation from Cursed! will be a Chekhov's Gun.
Anne will use her ability to speak to birds to summon some giant herons and fight the toads. Neither Grime and Sasha will know how to react to this.

The frogs and insects are the near the size they'd be on Earth. Anne and her friends shrank when they were transported to Amphibia.
This avoids the Square-Cube Law issues with the giant bugs, though it creates other problems.

Marcy will turn out to have been living with a group of Newts, whom she had become loyal to.
Can't be a coincidence that Anne was sent near the Frog town of Wartwood, and become a member of a family of Frogs, while Sasha ended up at Toad Tower and became Grime's second-in-command. So it only makes sense that Marcy wound up in a settlement of Newts, the third most prominent 'race' of Amphibia, and became aligned with them. Which explains why we hadn't been shown a hint of Marcy's whereabouts in Amphibia yet: we've yet to see a location that Newts govern, or at least are the majority people.
  • Marcy can be seen wearing a robe in the poster and Season 2 opening. When we see an illustration of a newt from Newtopia in "Handy Anne", the robe they’re wearing resembles that of Marcy’s, so this WMG May have some merit.
  • Confirmed as of Season 2.

Sasha will overthrow Grime and take leadership for herself
Considering how she views the frogs as slimy creatures, it's not likely she wouldn't say the same for the Toads either, and it's not likely that she'd want to remain a servant to a toad. Plus, seeing as she and Anne have just grown apart and have different interests now, she'd have lost her motivation to return home. All that being said, it wouldn't be beneath her to off or overthrow Grime and take over the valley for herself. Sasha said she's not willing to leave Grime to his death. she definitely did not say ''she'' wouldn't kill him herself.

They'll be a three-way war.
The Calamity Box is said to make bad things happen when it's opened. So far, this only seems to be true with Sasha considering her siding with the toads. So how will Anne and Marcie bring calamity? Their conflict with each other and Sasha will somehow provoke a war between the frogs, toads, and a third party (most likely newts). And if the bas-relief behind the title at the end of the intro is any indication, the only thing that will stop the war and bring peace to Amphibia is a Fire-Forged Friends scenario where all three races must work together to defeat a common threat.
  • This could be related to the theory above about a prophecy, the reason why the trio were sent to Amphibia.

At least one frog will change their gender or already has.
The frogs in Amphibia have similar biology to real life frogs and this is something some real life frogs do.

The two named kids from the school flashback in "Reunion" will be seen again.
Although they weren't close enough to get sucked into Amphibia, they will be revealed to have witnessed what happened. However, they won't be able to describe what they saw well enough for anyone to figure it out ("There were these bright lights and then they disappeared!").

Caecillian characters will appear at some point on the show.
Since caecillians are very poorly known compared to other major amphibian types, these will likely be spoiler characters. They will be mistaken for earthworms at first (which are huge in Amphibia). The shocker will come from the fact that they are actually sentient and able to talk. Based on their real-life behavior a caecillian might be encountered living near or in an underground social insect city (though the insects will act relatively primitively like chimpanzees - intelligent but in a limited way, as well as talking through signs and pheromones). Caecillians might also look cute at first but then appear as scary since they have many needle-teeth in their mouths. Also they might be portrayed as wearing clothing/having hair or beards made from their own old skin. As for personality, they might be secluded and shy but generally not evil (seeing as they pose no threat to humans in real life, except biting but only in self-defense).

There were wars fought over the Calamity Box.
The Calamity Box, with its legendary power, would attract numerous factions and individuals attempting to use its power for their own ends. The Bog Wars Sprig mentioned were one of perhaps many generations of conflict over the box and its secrets.

The Bizarre Bazaar is run by a cult that seeks the Calamity Box.
The Bizarre Bazaar is very mysterious, with hardly any familiar frogs in sight. We also don’t know who actually runs or organizes the Bazaar, except for two security guards, who honestly, with their dark hooded robes and hourglass symbolism, look more like stereotypical cultists than simple guards. Building on another theory, the Bazaar is a front for a cult that worships, or at least seeks out, the Calamity Box for its alleged power. The guards, Madame Valeria, and perhaps even Hop Pop, are or were members, their hourglass symbols on their clothes signifying their allegiance to the cult. Let’s dub this as of yet unnamed cult the “Calamity Cult” with a theory on their motives and history. As we know, the box is dangerous, but why is not known. The box must contain, or at least is believed to contain, great power. But the Gems on the box are inert, signifying the power has left the box. The Calamity Cult seeks this great power, and Anne may have dodged a bullet by having the box stolen before Madame Valeria could see it. For if she had, it would have put Anne in great danger. If the cult knew the box had returned, they would have seized her, and learned the power is no longer within the box, but may be inside Anne and her friends now after opening it. If they knew the power is now with the three humans, they would do anything to steal the power for themselves, even if it meant killing the humans.

The Calamity Box is technological in nature.
Season 2 dropped the major bombshell that Amphibia used to have technology, apparently advanced enough to mass produce robots and artificial intelligence. Perhaps the box is actually supposed to be used for travel in some way, but unwittingly brought some kind of calamity to Amphibia, restarting history in the process.

Amphibia's current setting is After the End
As mentioned above, it's revealed early in Season 2 that Amphibia once had technology that can still be found in certain places. It's possible that the Calamity Box caused something that resulted in a post-apocalyptic setting where technology is no longer used and everything appears to be old-fashioned.

Amphibia has a Fantastic Caste System
"Toadcatcher" reveals that Grime was working under Newtopia, and is now a fugitive after Toad Tower's destruction. Since it was established in season 1 that the toads rule over the frogs, it appears now that the toads themselves are ruled over by the newts, suggesting that there is some sort of caste system based on the species of amphibians.
  • Further supported by the fact that the king of Amphibia lives in Newtopia, and that the newts refer to the frogs as peasants.
  • Outright referenced in dialogue by Marcy in the Season 2 episode "Scavenger Hunt"! She mentions writing down her observations regarding the "amphibious species-based caste system" she's found in Newtopia.

The aforementioned caste system is a result of the betrayal Andrias suffered
We know that Andrias was once friends with a female frog and male toad who later betray him. Maybe before the betrayal, frogs, toads and newts were all on the same social level, but after the betrayal, Andrias decided to punish the toads and frogs by forcing them into lower castes than the newts. The forg's betrayl was worse than the toad's, and so he pout the toads in charge of the frogs.
  • Possibly confirmed by "The Core & The King; After Leif's betrayal, Andrias did mention that her kind needed to be "kept in line" while at the same time banishing Barrel to outskirts of the Amphibia to defend villages. That could have been the start of it.
A flashback will reveal where and when the BFF photo was taken.
Even if it's not plot relevant, it must have been a crucial moment in the three girls' friendship.

There's a fourth tribe of Amphibians yet to show up: Salamanders
Since Salamanders are closer in relation to Newts, it's possible this also was the same for their kingdom, till some conflict happened with King Andrias and they split off, the salamanders going into hiding, not trying to get into war with newts, frogs or toads. They won't appear till Season 3 though.

Amphibia has lighter gravity than Earth
  • Amphibia having lighter gravity than Earth's would go a long way to explaining how insects and birds are able to grow to such massive sizes. It would also explain why Anne, Sasha, and Marcy are able to go toe-to-toe with adult warriors like Yunnan despite only being teenagers. On top of whatever powers the Calamity Box may have granted them, they're Heavyworlders in comparison to Amphibia's natives.

The human trio's unusual strength in Amphibia is part of the process of getting Isekai'd.
  • Separate from the Calamity Box's effects, the mere act of going from one world to another boosts the traveler's durability, and this applies to their belongings as well. Anne regularly shows strength and durability beyond what her size and noodly arms should give her, and in circumstances where she shouldn't be getting a Gem-related power boost. She also seems to heal quickly.
  • But while this might be explainable as part of the Calamity Box's effects, the same really shouldn't go with her clothes and belongings. Her bath bomb exploded with far more force than it realistically ought to, her phone survived underwater and recharged from electropedes, and even her clothes seem to only get dirty at worst - which is notable with her sock.

Marcy was deliberately set up to learn about the Calamity Box.
  • It feels almost too "coincidental" that Dr. P's Extraordinary Guide To Magic & Mystery just happened to fall in front of Marcy at the library for her to find and that she just happened to come across the Calamity Box itself on full display at the thrift shop on the same day. Considering there's a prophecy at play, someone(s) on Earth may be secretly working behind the scenes to make sure that prophecy plays out.

Erik the Red of Norse history named his son after Leif the frog.
  • Andrias's frog friend, Leif, has been shown in the old pottery to have interacted with the Vikings while on Earth. Given she shares a name with the famous Leif Erikson, she may have been where his name came from in the first place.

Some toads after Andrias is defeated will become harvesters of the more carnivorous produce plants.
  • Toads' typical warrior upbringing makes them far more suited to tackle dangerous Amphibian plants for things like tomatoes and avocados than the frogs are. Some may make a living harvesting their produce and selling them so that others can enjoy the fruits of their labors.

A new, more stable portal may be created in the future with Titan's Blood.
One that is more reliable, doesn't need powered by ancient and all-powerful objects with doomsday potential, and can have the interdimensional shift pointed in the right direction through Bard magic and the old Calamity Box's leitmotif.

The people of Amphibia and the animals are all regular sized, but the Box works like a Boom Tube
The Frogs are frog-sized, the herons are heron-sized, etc. But like using a Boom Tube (but in reverse) going to Amphibia shrinks you down and vice versa. This has no real effect on anything.

Loggle concocted the stuff that created Veggierobo with notes from the lab in the tunnels under the Plantar house.
Veggierobo looks remarkably similar to the experiments in the lab. When Loggle went into the tunnels at the end of "Family Shrub", he became interested in the creatures and used Skip Plantar's notes to recreate the formula to the best of his ability.

    Misc. 
Amphibia takes place in the same universe as Gravity Falls.
  • Or multiverse. That would be more likely.
    • Jossed, but in a weird way. The episode "Wax Museum" features an oddities museum run by the Curator, an obvious reference to Stan Pines, and Frog Soos, an obvious reference to...well, Soos. The latter even postulates that there are alternate parallel versions of themselves that they are unaware of, which the Curator simply dismisses as Frog Soos licking himself again. This shows that the Gravity Falls we know does not take place in the universe of Amphibia.
    • It does, however, confirm that Amphibia and Gravity Falls do indeed take place in the same multiverse.
    • Actually Confirmed! Not only is it confirmed that it takes place in the same multiverse, but the same Earth as well, as Bill Cipher has made an appearance in P's Extraordinary Guide To Magic & Mystery. Considering the many parallels and the fact that the many references to Gravity Falls and the Wax Museum episode, it is almost 100% the same Earth as there should already be a Soos and Stan in the human world.

Related to the above, Amphibia was one of the worlds Ford visited during his thirty-year trip through the multiverse

Before the series ends, the audience will get a tease of Stanford and Stanley dropping by.
It won't be overt, but all that research into dimensional gateways Anne is doing to find a way home for the Plantars will eventually put her in contact with someone who has contact with them. They will arrive too late to affect the plot much, but possibly two old men who are twins will visit the restaurant, and one of them will have five fingers and a thumb. The audience won't see them and will only hear their slightly muffled voices, but they will be talked about briefly in the kitchen.

The two versions of the theme song will set the tone for the episode.
You know how the Teen Titans (2003) theme song would be in English for serious episodes and Japanese for silly ones? Well, unless the Celica Gray version was made purely for promotional purposes, I feel as though that version and the instrumental version will be used in a similar manner. Not entirely sure which version would be used for what kind of tone, but maybe the Celica Gray version may be used for serious episodes since the lyrics provide some context for what the series is about as opposed to the intro on its own which seems pretty whimsical minus the photo of Anne’s friends.
  • Somewhat confirmed. For both the mid-season episodes "Toad Tax," and "Prison Break," as well as the season finale "Reunion," only the title card and a brief instrumental are used, possibly in an attempt not to offset the serious episodes with upbeat, positive theme song music. While the lyrics version of the theme is never used, they are two distinct openings that highlight the seriousness of the episodes they precede.

Amphibia is another dimension in the multiverse of Star vs. the Forces of Evil
After all, a frog dimension? Sound a bit like one of those crazy dimensions Star and Marco might accidentally visit at one time or another.
  • If that is true, then the frog folk might reference a great cataclysm that destroyed magic. But in any case, it would be rather unlikely Star and Marco would visit because Star destroyed the magic, making dimensional travel near-impossible. Added to that, maybe that music box was probably one of the only few magical artifacts remaining after the Cataclysm, and using it when there is no more magic in the multiverse would make travelling to Amphibia a one-way trip.
    • It's possible Mewni, Dimension X-103 and the Boiling Isles are three of the five other worlds shown in the tome. Also, it's notable that Anne's dialogue has curiously avoided calling her world "Earth." She persistently refers to herself as a person "from another world," even in moments when the phrase is awkward and it would have been easier to use a proper name for that world. Of course, even if those are the worlds shown in the tome, it's possible they're just Easter eggs and don't actually have much bearing on the plot.

Just like how Big City Greens had Fozzie Bear as a guest star, this show will have Kermit as a guest star.
Considering he'll be attending the D23 Q&A of this show and Big City Greens, it's not unlikely.

The lyrical version of the theme song was meant to be the only version of the theme song.
Much in the same way DuckTales (2017) has a lyrical open. But at the last minute, there was a royalty issue on how to split the cost of the song, so Disney threw it under the rug, trying to get away with just an instrumental version instead.

Amphibia isn't another dimension, but a planet referenced by Phineas and Ferb.
Recall the Season Four episode “Mind Share”, in which alien super-crooks from a planet of frogs and reptiles take over the bodies of Phineas, Ferb, and their friends. Anne has been sent to the same place (though luckily, not an intergalactic hoosegow).

Season 2 will include a "let's make our own movie" breather episode
With the rest of the town being hooked on the movies and tv shows that Anne has stored on her cell phone, sooner or later there will be a demand for new ones. She will be talked into making a new frog-centric epic adventure with her cell phone, which may conveniently turn out to have included a video editing app all along. Story elements will include Sprig playing The Hero, Polly insisting on playing The Big Guy, Maddie and Ivy competing for the role of the heroine, townspeople trying to bribe Anne into giving them roles (or alt least list them as "producers"), and Anne becoming a Primadonna Director, possibly getting into a feud with Caustic Critic Duckweed.
  • Jossed now that all of season 2 has aired.

There will be a future episode where Sprig gets jealous of Anne hanging out with Wally
After how the events of "Wally and Anne" turned out, Anne will be spending more time with Wally. This will make Sprig question himself and possibly do something drastic in order to win Anne back.

The Cloaked Figures with the Red Hourglass Signs from "Bizarre Bazaar" are part of an evil cult
There were figures who at the Bizarre Bazaar that had hourglass signs, and their cloaks were so dark, only their tails were showing. Plus, the hourglass symbol looked like the kind you find on Black Widow Spiders. They must use the Bazaar to fund their operation, whatever it is. If the hourglass sign and their cloaks are not a sign of evil, I don't know what is.

The photo seen in the intro is Marcy's
The photo seen in the intro has a tear in it above Marcy, whereas Anne and Sasha's copies have been shown to be in pretty good condition.

The music box became magically uncharged when the girls were sent to Amphibia.
Look at the gems on the box in the series' episode opening. The three gems in the lid are shown to be red, green, and blue. But when Anne tries to use it in "Anne or Beast?" all three are white. To get back, they'll have to figure out how to recharge it.
  • Confirmed by Andrias in "A Day at the Aquarium"; the gems have to be recharged at each of the three temples.

Marcy will be voiced by Zehra Fazal
I found this tweet from Zehra Fazal talking about her excitement for the series, and giving this 😈. Maybe this means she'll voice Marcy.
  • Jossed. While Zehra Fazal is in season 2, she's a different character, General Yunnan. Haley Tju voices Marcy.

Sasha and/or Marcy will ultimately die
Half-confirmed with Marcy at the end of Season 2, but might be Not Quite Dead.

Anne will return to Earth alone
Scenarios:
  • Anne returns to Earth prematurely and makes her way back to save the Plantars.
  • After Marcy turns against her, Anne abandons her and Sasha and makes her way back alone.
  • After Sasha redeems herself, she and Marcy decide to stay and send Anne back.
    • Half-confirmed. Sasha redeems herself and stalls Andrias so Anne and the Plantars can escape to Earth, but Marcy is killed.

Guesses on what/who lived on the planets the Newts explored
  • A planet that belonged to mammals. This planet isn't Earth, and is run by a lesser species instead of humans. Possibly rodents, with the higher species being mice and/or rats.
  • A planet run by Insectoid Aliens, higher species being either spiders, scorpions, or mantis'.

King Andrias will be a fan of Suspicion Island.
Since Marcy also turns out to have her phone with her, she introduces the show to Andrias, and he’s hooked! Just to complete the unlikely trinity of characters who you wouldn’t think would like this Show Within a Show.

The book Andrias showed the Plantars is a bigger edition of Hop Pop’s book.
We notably haven’t seen the cover of Hop Pop’s book on the calamity box, so it may just be a different page in the same book. One section telling about the power of the box and it’s origins, with another telling of it’s dark history and alleged fate.
They will release a real version of the book on the calamity box.
Akin to Journal 3 or The Magic Book Of Spells.

The Anne’s vision of Sprig in “Anne Hunter” was not a stress-induced hallucination, but has something to do with the powers she got from the Calamity Box instead.
Evidence both his could-like hue and Anne’s powers are blue. Also he didn’t exactly say he was for sure was one. He probably has no idea of his true nature any more than Anne does and it was the best explain he could come up with.

Amphibia take place in the same multiverse as Big City Greens
Herbert makes a cameo in one of the Season 2 episodes “New Wartwood”, when Marcy tries fix a statue, which implies that Big City takes place in the same multiverse like Amphibia.

Amphibia takes place in the same universe as The Owl House
The Owl House was briefly in “If You Give A Frog a Cookie”, while Dr. Frake showed some of the universes.
  • Although it wasn't confirmed in this show, this was ultimately confirmed in Episode 21 of Season 2 of The Owl House.

There will be a Disney Animated Multiverse
Given that the Season 2 finale has revealed there is a multiverse of the other worlds, and The Owl House was shown as one of the,, this might heavily be implied that there will be a Multiverse of Disney.

Like The Magic Book of Spells and Gravity Falls: Journal 3, we will get a defictionalized version of some of the fictional books in this show.

Considering the following trend of Disney making "big books of fictional magic from popular shows" real, when Amphibia has finished airing, physical versions of Dr. P's Extraordinary Guide To Magic & Mystery will be produced by Disney. Since not only does the book have Bill Cipher in it and the fact that it has been confirmed both in the show and by the creators of the show as at least taking place in the same multiverse (Anne almost definitely shares the same Earth as Dipper and Mabel), the book will also have references to other Disney shows such as The Owl House and Big City Greens.

For obvious reasons, the Amphibia series would never directly address as much, except maybe through vague, roundabout references or possibly tweaked names.

Regarding the identity of the voice actor for the Core
, whose lines were briefly heard in the end of the Season 3 trailer.

The show is actually a stealth/distant sequel to Don't Starve
The similarities between the plots and locations of both works are quite uncanny:

With all of these similarities in mind, here is my hypothesis:

  • After the starvers managed to finally escape The Constant, the Shadow Creatures were driven mad from their absence, and quickly searched for a new master: A small, lone newt on a relatively large Shipwrecked world who happened to be an ancient ancestor of Andrias. The Shadow Creatures then gave sapience to the frogs, transformed the Merms into Toads and created several more mobs to populate the dimension now known as "Amphibia". Eventually, the Shadow Creatures run out of nightmare energy and reincarnated themselves as Shadowfish, while the remaining Shadow Creatures are fused together by a newt who did spelunking in The Ruins to create The Calamity Box, hoping that decades later, a group of humans would come across it and allow the two dimensions to be linked just like the starvers of long ago...

Amphibia is set in the same universe as Lights Out and SHAZAM!.

Amphibia is a Stealth Prequel to the universe of Grand Chase
  • When Anne obtains her duty of godhood after her death as an old lady, she splits her powers among Sasha and Marcy in the afterlife. The trio with their new hair and powers take up new names protect the multiverse together and in their travels, they create Aernas and fight the invading demons, who have obtained similar levels of power in the centuries. Bonus points if said demons are from the Demon Realm.
When starting their collective duty, Anne goes through her K-pop playlist and plays "Hope" upon when taking the first step.

The races of Amphibia are descendants of the Rakatan Infinite Empire.
Given that the Rakatans themselves had some amphibian-like features themselves, it seems reasonable to guess that the Rakatans discovered inter-dimensional travel and some escaped the destruction of their old empire thousands of years ago to later evolve into the Frogs, Toads, and Newts we see today.
  • It'd make even more sense given that the Newts (especially during Aldrich's time) were Multiversal Conquerors themselves.
Amphibian bathrooms are designed to allow for Toilet Teleportation.
  • Hence why Sprig and Hop Pop instantly expected it to be possible after realizing the archives used to have a bathroom. This would also explain why the only time we actually see an Amphibian toilet it's clearly not frog sized.

Alastair from "Love Choice" is somehow related to Alastor.
Come on; a humanoid deer being with the same name (if a different spelling)? Can't be a coincidence.

    Season 2 
Marcy will actually want to stay in Amphibia
Since Anne and Sasha are actively trying to get home they'll mix things up by having Marcy actually enjoy Amphibia more than Earth. To further differentiate her from the other girls she’ll also play a more neutral role in the conflict helping both sides when it suits her.
  • Really? I always assumed it would be Anne who wants to remain in Amphibia, on account of how close she is with the Plantars and Wartwood. And not to mention she fought Sasha, her best friend, for their safety in "Reunion". I would have expected Marcy to the the complete opposite.
  • Actually, there is a way Marcy would turn out to be reluctant to return: her life on Earth was less than stellar. We really don't know what their home lives were like for any of the three girls (although we get some hints for Anne). Marcy's home was so bad that she decides dealing with a Crapsaccharine World or Death World may be favorable by comparison. Admittedly, this is long shot, even for a program that either frequently implies or shows deadly or near-death events. What could be worse than being eaten alive? Any number of modern horrors that make the headlines.
    • CONFIRMED, Marcy really wants to stay in Amphibia, in fact she was the one that found the Calamity Box and knew that it was magic all along. Her parent had told her that they were going to move away and she wanted to live more adventures with her friends.

Grime will put a price of Hop Pop's and Wally's heads
After finding out who planted the bombs under Toad Tower, Grime will add Wally to his list of in absentia death sentences. But rather than risking unrest in the frog community by openly sending out his troops to capture Wally and Hop Pop, he will leave it to the bounty hunters. This may send the Plantars on the run, and will add a whole new layer of drama to the new season.
  • Jossed, and quite the opposite, actually. Grime is branded a traitor by Newtopia, his entire army deserts him, and a price is put on his head.

Marcy has become amnesic
The Calamity Box could do anything to it's unfortunate victim who opens it, so it wouldn't be impossible that Marcy ended up losing her memory and went native.
  • Jossed

More episodes will feature Anne's role as Wartwood's protector
Since most shows by season 2 get more action-packed, it wouldn't be surprising that every two episodes Anne will end up fighting a random antagonist that wants to terrorize Wartwood.
  • Jossed. Besides the vegetable monster in the first episode, every subsequent episode takes place on the road as the Plantars journey to Newtopia.

Marcy has become a Wild Child
  • Instead of landing near a settlement like Sasha or Anne, she landed deep in the wilderness and when she's eventually discovered she's become a Wild Child and The Beastmaster.
    • Jossed

In Season 2, Anne will travel to other parts of Amphibia.
  • Season 1, apart from the few Toad Tower episodes, largely took place in the town of Wartwood. In Season 2, Anne and the Plantars will leave Wartwood and travel to other parts of Amphibia that have been only alluded to so far.
    • Confirmed.

The Plantars will accidentally be brought to the human world
Probably as a season cliffhanger, hopefully Anne will be with them to help adjust to life on Earth.
  • Once Anne gets her parents acquainted with them, the Boonchuys will have the Plantars move into their backyard pond (assuming they have one).
    • CONFIRMED

Marcy was straight up killed
  • Amphibia so far is revealed to be an incredibly dangerous place. Both Sasha and Anne have to not only beat back dangerous animals, but corrupt individuals. It is possible that Marcy might not have last longed on her own. Anne and Sasha learning about this could underscore just how fragile life in Amphibia really is.
  • Jossed by the NYCC Season 2 Poster.
    • Later confirmed by the end of season two... maybe.

Hop-Pop knows more about how to get Anne home than he reveals
Hop-Pop burying the music box is a big red flag that the old frog isn't being honest. Perhaps he is like Grunkle Stan, in that he is hiding something from his family. This could also put him in conflict with Anne.

Sasha will be Trapped in Villainy
After the events of "Reunion", she will be wracked with guilt over the way she treated Anne, believing she no longer deserves to be Anne's friend, or even go home after what she did. She will think she now has no choice but to continue working with Grime (partially because he saved her life, but also because she thinks he and the toads are the only ones willing to accept her after what she's done).
  • Jossed. While she has lingering guilt over what happened at Toad Tower, she has repressed most of it and still agrees to reform Grime's army and storm Newtopia, noting that she and Anne are on different paths now and that they are not done with each other yet.

Marcy will become a cannibal.
Considering how prominent cannibals are in the show, it may be foreshadowing. Marcy is Going Native, becoming insane from isolation or by eating the wrong plant and systematically losing her grip on reality. She becomes a savage monster to the populace much like how Anne was portrayed in the first episode after eating other sentient creatures including Frogs and Toads. Eventually, when confronted by Anne and/or Sasha, she will be so insane and broken away from reality that she will attempt to eat them as well.
  • Probably jossed. In the season 2 trailer, we see Marcy appear at the gates of Newtopia wearing a hood and using a grappling hook, something she probably wouldn't do if she did go crazy and become a cannibal. Plus, the newts probably cleared up her head in that time if she really did go crazy if she's still in Newtopia.

Marcy is working for some Newtopian noble as a spy/scout
Much like how Anne fell in with the frogs of Wartwood and Sasha fell in with the toads of Toad Tower, Marcy wound up in Newtopia and somehow worked her way into the good graces of some upper-class Newtopian for their (probably) nefarious plans.
  • Confirmed. Marcy at the Gate reveals she's head of the "Night Guard" and frequently goes on mission. She claims to have a 100% clear rate.

Hop Pop burying the Calamity Box will have dire consequences.
Namely, it'll start living to it's name and cause destruction throughout Amphibia. And since Hop Pop hid it away, the heroes won't learn that it's responsible until it's too late to do anything to stop it.

The "additional materials" needed to complete the robot frog that's been following our heroes since "Fort in the Road" is an Amphibian brain
The "robots" are actually cyborg soldiers made from (probably unwilling) frogs, toads, or other Amphibians to fight some ancient war. Right now the "Frobot" is running on some sort of auto-pilot AI, hence its struggles to simply walk around a tree at the end of "Anne Hunter".
  • Most unlikely. When Hop Pop was grabbed by the access point, he nearly got squashed. If a buzz-saw appeared and was about to cut open his head, along with a grabber to remove his brain, this theory would hold some weight, but since he was nearly squashed, it was unlikely that the required "additional materials" would be a brain, as a squashed brain is comparatively useless with regards to an intact brain.

Marcy will become a scrupulous Anti-Hero
It will balance out the dynamic between the human characters. Anne is the protagonist, Sasha is the most significant antagonist, possibly barring Grime, and Marcy will be the morally questionable, snobbish one, considering she's with the Newts, who may be snobbish as a whole, if Albus Duckweed and the Amphibia's Got Talent judges are any indication.
  • Jossed in terms of Marcy's personality, which is far from snobbish. That said, she is working for the King of Newtopia.

When the protagonists return to Wartwood, the toads will have conquered it.
Grime needs to make an example of the town that defied him in order to quell the rebellions, plus the heroes need time to get to Newtopia and back, which would leave Wartwood vulnerable.

What became of the Curator after the events of "Wax Museum"
Although the main characters assume he is dead, the Curator himself says otherwise note . He was most likely trapped in wax by the creatures he imprisoned and later melted out with the help of Frog Soos. Since amphibian versions of Dipper and Mabel are confirmed to exist by Word of God, their arrival would boost his Heel–Face Turn and he would ditch actual, living exhibits for fake ones.

The Curator has no brother or tragic past
Since he had no morality chains, he is left as is a greedy con-man with zero standards or concerns compared to his human counterpart.

While Sasha is knowingly manipulates Anne's feelings. Marcy unknowingly does it. While she doesn't mean to, she still disregards her friend's emotions. This is backed up by Word of God referring to Sprig as Anne's first non-toxic friend and the fact that Marcy saw no issue with Anne stealing the Calamity Box.

Anne is the toxic part of the friendship with Marcy
  • If Sprig supposed to be Anne's first non-toxic friend, that does mean does Marcy has to be or had to have been toxic (it's not first non-toxic friendship after all). Of course, they could have both been toxic to each other.
    • Anne may have started out as the toxic influence, Marcy just got over her in that.

It will be revealed that Marcy planned for the girls to travel to Amphibia.
  • I think Marcy was somehow already aware of the Calamity Box and the power that it holds, and manipulated things so that the trio would be transported there. She texted Sasha the picture knowing that she wouldn't be able to resist convincing Anne to steal it. This can be backed up by her appearing smug when Anne first stole the box (an odd expression to have unless you're either amused and/or something is going exactly as you planned). Whether she did all this just to live out her JRPG dreams or she's working on something more suspect is up in the air, but if the S2 opening sequence is anything to go by, it's totally the latter. And following that thought, it's the King following her lead on whatever plan this is, rather than him working behind Marcy's back. It also doesn't have to be an evil plan per se, but it will be something huge that sets up season three.
    • CONFIRMED

Something will further destroy Anne and Sasha's friendship
Season 2's variation of the theme song features an epic sword fight between Anne and Sasha. But what's notable, aside from the Marcy's lightning shot, is that neither of them look saddened or scared of their friend, with Anne clearly enraged and Sasha sporting a Slasher Smile, and they're both going in for the kill.

This is in contrast to their "Reunion" sword fight. While neither Anne nor Sasha were particularly concerned with not killing the other there (with Sasha taking a dangerous swing), they were clearly pushed to it after negotiations (read: manipulations) failed, both aimed to disarm the other and Sasha still tried to talk Anne out mid-fight.

As of Season 2, Anne and Sasha clearly still miss each other, Anne saying she still cares about Sasha despite them going through a rough patch, and Sasha being unable to bring herself to destroy a training mannequin of Anne.

So while the two are definitely not inviting the other to their hypothetical wedding, Anne and Sasha don't want to kill each other, and probably still want to go back home with Marcy. So they both have to do something (or be mistaken of doing something) that would make them cross the Moral Event Horizon in the each other's eyes.

Sasha will order Anne to Kneel Before Zod.
Sasha's angry and humiliated that Anne betrayed her, disregarded their friendship, exploited her compassion, attacked her in a sword fight and made her look weak and pathetic. Sasha did the same to Anne, but she wouldn't care about that, obviously. She clearly holds a grudge over it.

After some Sanity Slippage, while holding the Plantars hostage, she would demand Anne to bow, kneel, beg and/or grovel for mercy. Seeing how adult this particular trope is, Anne would probably refuse to do so. Either way, referring to the above theory, this could be the last straw that ruins their friendship.

One of the girls would discard their BFF photo

Anne, Sasha and Marcy were caught shoplifting the box and had just fled the shopkeepers or the cops before the box transported them to Amphibia

Grime will die, and his death will be blamed on the Plantars, which will drive Sasha to break off her friendship with Anne for good
Grime will be killed by one of the newts as part of a plot to frame the Plantars once they get on Newtopia's bad side. With his death, Sasha will be devastated by the loss of her friend. And then either King Andrias or someone else will frame Anne and her friends for it, prompting Sasha to view them as unforgivable and change her goal from reconciling or at least getting minor payback to instead killing them to avenge her friend.
  • I honestly doubt that'll happen.

Season 2b or Season 3 is where things start to get serious.
The first half of Season 2 may still have most of the sitcom elements of Season 1, but with a bigger Story Arc and a possible Myth Arc on the rise, there seems to be a battle or something sinister creeping up behind the scenes...
  • The season 2 finale, at least, might have the Toads attacking Newtopia. Possibly leading to another fight between Anne and Sasha as mentioned above.

Polly will gain legs by the end of the season
As pointed out by Marcy, Polly's legs should sprout out within two months. This may be the amount of time they have spend throughout their stay in Newtopia and travelling back to Wartwood. Perhaps during a likely second battle against the toads, Polly's precious bucket will be destroyed and her new legs will kick in as a Deus ex Machina.
  • CONFIRMED

Sprig's mom isn't dead
She was transported to another world by the Calamity Box, which is why Hop Pop is so terrified of it. In order to hide the truth about the box to prevent losing them as well, he told his grandchildren the lie that their mother passed away.

At Anne and Sasha's next encounter, Marcy will be forced to choose which one to side with...
...and that choice will likely determine which will win. Though it may seem that Marcy is more loyal to Anne for the moment, future revelations may serve to make this choice far less certain.

There will be a three-way war between the frogs, the toads, and the newts.
The first season has already established that there are frogs rebelling against the toads, and the second season is clearly building up to a toad invasion of the newts. All we need now is a reason for the newts to be set against the frogs, and the circle will be complete. If this is true, then Marcy may well be torn between her friendship with Anne and Sasha and her loyalty to the newts.

The Curator is a criminal who stole the identity of the real Frog Stan.
Whatever happened to him is anyone's guess, but this guy simply cannot have anything to do with any Stan Pines in any universe.

The frogs, toads, and newts used to live together in peace until a war broke out, presumably over the Calamity Box
The portrait in the basement in "The Sleepover to End All Sleepovers" indicates that the three species used to be on friendly terms, but the way it's been torn up and abandoned seems to indicate something happened to disturb that peace.

Hop Pop might become a Broken Pedestal to Anne, Sprig and Polly.
Once Hop Pop confesses that he buried the Calamity Box, it might end up in a level of "Not What He Seems" mixed with "The Last Crash of the Sunchaser!", when Anne and the grandkids get mad at him for lying to them and ruining Anne's chance to get home and having to go all the way back to Wartwood to get the box back. This would cause Hop Pop to get mad in return and say that they're nothing but trouble, causing Sprig and Polly to disown him and leave with Anne once she gets the box back. Felicia would then say to him, "Well, you successfully pushed your family and everyone who cared about you away...again. I hope you're happy."
  • Jossed so far. There is bad blood between Anne and Hop Pop and while they do make up at the end, but "The First Temple" shows that it's going to take time for them to fully make up.

King Andrias is plotting to take over Earth and will be the Big Bad of Season 3
As was ominously established at the end of Marcy at the Gates, "the pieces are coming together". Anne, Marcy and Sasha seem to hold the key to opening the Calamity Box note . Andrias mentioned that his ancestors were "peaceful explorers" who used the box to travel other worlds, most likely fabricating part of that statement. Now that Anne has left with the Plantars, his proposition for Marcy will be to track down Sasha as the final piece. Once the girls reunite, all hell breaks loose onto the human world, turning it into a fusion between Earth and Amphibia! And that's the start of Book Three.
  • For his sake, I hope not. Unless he has a whole lot of SuperweaponSurprises waiting in the wings, modern-day Earth would outright steamroll Newtopia's forces (which, from what we've seen, appear to be at a medieval or Renaissance tech level.) Not to mention, we've seen Sasha and Anne hold their own against Andrias' (alleged) best warriors. Empowered by the Calamity Box or not, they're still thirteen-year-olds. How well would Yunnan and co. really fare against fully-grown adult humans with military training?
    • CONFIRMED and it has been revealed that Amphibia is much more advanced than previously thought, but internal conflicts have prevented their advancement

Grime was an Unwitting Pawn for King Andrias.
Grime was manipulated by Andrias to invade Wartwood and capture Anne alive, not counting on Sasha being sentimental. In the second season finale, this will cause Sasha to pull a Heel–Face Turn and the frogs and toads to join forces to stop the newts from invading Earth. Unfortunately, Andrias succeeds, and quickly destroys every government and creates a nightmarish dystopia. Season 3 will involve the girls, the Plantars, and Grime forming an underground rebellion with newts who disagree with Andrias' genocide.
  • Partially jossed right now with Anne and the Plantars bein separated from Sasha and Grime at the end of "True Colors" and Marcy's death.

Sprig and Polly's Dad?
Nobody mentions about their Dad, Their father either died or turns out to be alive and possibly an established character or new character.
  • Or worse (depending on the circumstances), their father is just a deadbeat who walked out on their mother one day.

When the Calamity Box, the prophecy, and the girl's connection to both is revealed, tons of groups will start vying for both the girls and the box.
Hop Pop said that there was danger in showing the Box around, which is why he buried it. When word inevitably spreads about it's presence in Amphibia, the fact that it empowered the girls somehow, and the fact that there's a prophecy involved, everyone and their grandma will try to claim/kidnap/steal/eat/coerce/sacrifice/ally with/protect and/or destroy both the box and the humans.

Some might want the prophecy to come true and save them all, some want it to happen only in a way that benefits them, and some see it as a prophecy of Doom that must be prevented. There could be those who want the box, or the girls themselves, believing they're too dangerous to let run free, or just wanting power. With "Grubhog Day" showing that some of the animals are intelligent, they could be like the demons in Journey to the West, where eating the protagonist makes them immortal or all powerful.

The Building, Archway, and Volcano are all part of the First Temple.
People are saying how you can see all the temples shown in the book in the end credits, but if that was all three temples, being so close together, why would the book only list one? They aren't that far apart, and are clearly visible even from a distance. Not exactly something you'd have to hunt down an ancient book to find. And if they were all the temples, then the book would be listing all three of them, since it shows all the aforementioned structures. But it just lists one. The answer?; the Building and the Archway are how you access the Volcano Temple.

Maybe it's that the keys, or anything key-like, to get into the temple are in those places to keep them safe. Or, since it's a volcano with lots of lava, heat, poison gas, and other such deadly things, they need whatever is at those structures, magical or otherwise, to enter the temple and hope to survive. The book even shows the structures and temple in a specific order, showing the steps needed to get into the temple. e.g. "First go here and get/do x, then go here and get/do y, and then you can go in without dying or something."

Return to Wartwood is gonna be a Wham Episode
  • Kind of adding onto the Broken Pedestal thing above, this is where the Plantar kids find out Hop Pop had lied to them about the Calamity Box all this time. Weather they end up finding it themselves, OR, it turns out one of Wartwood's inhabitants ended up finding it on their own and question the family about it. Either way, the episode is gonna have a rather Downer Ending.
  • Worse yet, they could very well arrive back in Wartwood to find the town occupied by Andrias' forces, tearing the place apart looking for the Box. Proving that Hop Pop's paranoia might have been justified all along.
  • Jossed. The episode was like any other.

When Sasha meets Andrias, she'll see right through him
Sasha is the only human who hasn't met Andrias yet, and since she and Grime are planning to go to Newtopia, their meeting is inevitable. Whatever the circumstances, Andrias will try to pull his nice guy act on Sasha... who will see right through him immediately.Sasha knows how to manipulate people with kindness and compliments - the advice she gives to Grime and her relationship with her friends prove that - so when someone tries to pull the same shtick on her, it'll fail because she knows all the little tips and tricks.

At the end of Season 2 Sprig, Polly, Maddie, Ivy and Marcy will end up being teleported by a malfunctioning Music Box to each of the four worlds beside Amphibia and Earth
During the series finale the Music Box is activating while Anne and Marcy try to convince Sasha to come home but however Yunnan attacks with Sprig, Polly, Maddie and Ivy trying to defeat Yunnan but General Yunnan accidentally strikes the box and it starts to malfunction. A massive explosion then happens sending Yunnan flying over the edge and into the water. On the battlefield with Frogs, Newts and Toads fighting each other all three groups notice the explosion and stop fighting. Hop-Pop and Marcy's friends head up to the tower and arrive as the smoke clears. Anne and Sasha are on the ground injured. The two look to see the Calamity Box completely drained again with one of the gems missing. Anne then sees Polly's bowtie singed and starts crying. She then turns towards Sasha with anger in her eyes. Sasha holds up her hands surrendering but soon they hear Toads approaching the tower so Anne and the others flee Newtopia as the Toads overwhelm the city. Lady Olivia and several guards flee the city in a boat rescuing Yunnan as the city burns. Anne and the others ride the Fwagon to safety as fast as possible as Frogs and Newts flee in droves. Sasha looks to see Anne escaping with Grime showing up saying that they finally conquered Newtopia. Sasha is silent before looking at the Calamity Box and picking it up. Sasha explains to Grime that the box teleported the girls to Amphibia. Several Toads are then shown breaking into the palace searching the entire castle for Andrias before finding the room that Andrias's master was in. They find it empty with several wires sticking out. A few days later Anne, Hop Pop and the others come back to Wartwood much to the surprise of the town who thought that Anne was going home before wondering what Sprig, Polly, Maddie, Ivy and Marcy are. Anne shows them the singed bowtie much to the horror of the town. Anne clutches it before giving a speech about how they must fight back against the Toads for the sake of everyone in Amphibia and stop any more lives from being lost. The town decides to fight back. Valerina is shown on a cliff looking over the town with a cloaked stranger behind her. She informs the cloaked stranger that they must do everything in their power to make the prophecy come true. Roll credits but soon we see Sprig waking up along with Ivy on a beach. They look around and see a massive ocean. Sprig says I don't think we're in Amphibia anymore as the camera pans out to show a continent surrounded by a massive ocean.
  • Well, it happened in spirit. Since Anne and the Plantars got transported to Earth at the end of Season 2.
The Heron from Hop Pop's flashback were sent to actually capture the Plantar parents, especially Sprig and Polly's Mom
It is weird that wherever there's some connection to the Calamity Box, whether it is Sasha at Toad Tower, or the Plantars with a book (and more research) on the Calamity Box, those heron were there to attack. From what I saw in the trailer, the newts of Newtopia able to train birds since Marcy was riding a wren big enough to be a helicopter. Plus, we know that Andrias and Sprig's mom were in a portrait together, and that young toad could be a young Grime before his eyes were scared.

Andrias' plan
The only idea I have of what this whole “revenge” scheme Andreas was planning could be that his ancestors used his “master” to conquer the other worlds only for it to be weakened or sealed away. So perhaps powering the gems is supposed to undo whatever spell was placed on his master.

To do so, the gems required human hosts with personalities/emotions fitting to that specific gem.

Andrias' "lord" from the ending of "The First Temple" is some kind of Lost Technology AI from the same civilization that made the ruins/Frobo factory in "Fort in the Road"
The Toad Lords are a group of Toads who control various different pieces of land in Amphibia and Grime was once one of them
From we know the Toad Lords are probably like Captain Grime and they each control a different part of Amphibia but due to the fact the destruction of Toad Tower, farmers are going up against the Toad Lords and challenging their rule so the Toad Lords will assemble and discuss how best to deal with the situation. Grime and Sasha would probably hear about this and try to recruit the Toad Lords into their plan to attack Newtopia.
Andrias's lord is a being from another world that a thousand years ago tried to conquer Amphibia and the other 3 worlds besides Earth but was defeated and imprisoned in the dungeons beneath Newtopia
After the events of Toad to Redemption Wartwood will learn about the frog uprising going beyond the valley and learn about how the Toad Lords were formed which leads to Wartwood deciding to lead the other towns against the Toad lords

Valeriana charged the stone slowly on purpose because she knows the prophecy isn't supposed to be undone.
  • Her fight with Anne establishes her as having some way of knowing what happened in the past, even if she wasn't there. So it isn't too much of a stretch to believe she knows what King Andrias is up to and how it all ends. Whatever powers the stones bestow are likely essential for the final battle so she couldn't allow Anne to be stripped of them completely. Trouble is , Anne will likely be at a huge disadvantage against Sasha due to having hardly any left.

The box won't send Anne home because of a half charged gem.
  • Once the third gem is charged up, Anne will realize the blue gem has only half its power and the box doesn't have full power yet, thus her quest was All for Nothing.

Grime will betray Sasha.
  • Grime will reveal he only used Sasha to gain control of Amphibia; once he gets what he wants, she will be of no use to him anymore.

Anne and Sasha will fight again.
  • Anne and Sasha will have another fight. That and Anne will give Sasha the "end of discussion" face.
  • Confirmed in "True Colors".

King Andrias turns out to be the Arc Villain of Season 2.
  • Based on Andrias' ominous encounters, he is secretly plotting something that's awaiting Anne. And according to Marcy's quizzical face in "Battle of the Bands" when Anne announced they're going home tomorrow, she might be in on Andrias' "proposition" as mentioned at the end of "A Day at the Aquarium".
    • Confirmed

The half-charged gem will backfire on both Andrias and Anne
Anne and her friends put the gems together in hopes of returning home. But at the last second, Andrias will swipe the calamity box and harness its power for his own plans. But because of the gem that didn't fully charge, Andrias will be foiled. However, it will also leave Anne to confess to Sasha, Marcy and the Plantars about her mistake, bringing the season to a Downer Ending where they have a fallout.
  • That or the half-charged gem turns out to be a Chekhov's Gun.
    • Confirmed in True Colors but jossed in terms of the idea of Sasha, Marcy, and the Plantars being upset about it or Anne confessing to them.

The "creature" Andrias met with is actually a gigantic Life Support system.
In the ancient past, the Leviathan family controlled a multiverse spanning empire, the “Leviathan Empire” if you will. With the mysterious gems power, they could travel to any world, and explore and conquer them with their advanced robotic war machines. But after a rebellion by their subjects, and a schism in their own bloodline, with some Leviathan family members hesitant to continue their conquests after realizing the damage and oppression it causes, the gems were lost to the Earth dimension, and all the gateways between worlds sealed. The remaining Leviathan family members then took power, knowing they’ve shunted their land back to the Middle Ages, but happy they have freed the other realms from their own tyranny. Andrias is descended from the victors of the schism, but unfortunately, his family’s dark past lingers to the present day. In his youth, Andrias, next in line for the throne of Amphibia, discovered a dark secret. Beneath the palace, or perhaps elsewhere, was his ancient ancestor. The last of the rulers of his family’s ancient empire, kept alive by the Lost Technology of their long past golden age. Alive for now, but without the resources of other worlds, gradually failing, his ancestor offered his descendant a deal. Revealing his family’s hidden past, and the great power and prestige that could have been his to this day, Andrias had his eyes opened to the universe by his ancestor, and was promised it all. That is, if Andrias helps his ancestor reclaim the gems that allowed them to conquer, and take revenge on the descendants of the rebels and their own family, who caused the fall of their once mighty Leviathan Empire.

The Calamity Box will be destroyed.

Anne makes the ultimate sacrifice to "save the world" and destroys the box, but the gems remain, regain their full power, and bond with the girls, giving them new powers allowing them to defeat Andrias and fulfill the prophecy, saving Amphibia, and Anne agrees to stay a little longer this time.

The last three episodes of the season will have some Oblivious Guilt Slinging.

Likely by Anne towards Marcy and/or Sasha.

Sasha will have a moment where Grime's behavior will remind her of herself in the worst kind of way.
Perhaps when she starts to have doubts about their plan, Grime will shut her down with the same "end of discussion" face, and being on the receiving end of that kind of treatment will nudge her towards a Heel–Face Turn.

The show is actually a stealth/distant sequel to Video Game/Don'tStarve.
    Season 3 

The Season 3 End Credits will be a bit more intense than the last two.

Series Finale End Credits Song
As Amphibia reaches its end, there is a likely chance that there will be a special end credits song as a bittersweet farewell to a world of frogs and toads. Here is a list of potential end credits songs for both "All In" and "The Hardest Part". Feel free to add to the list.

  • "Anne's Theme" By TJ Hill (Either a triumphant reprise or the Anime-styled remix version): Well, OBVIOUSLY! What's Amphibia without it's iconic character theme song.
  • "Welcome to Amphibia" by TJ Hill and Celica Gray
  • "All This Future" by Hillsong UNITED
  • "Another Road" by Rachel Aggs
  • "It's Your Life" performed by Francesca Battistelli
  • "Well Done" by The Afters

    • "All In" Outro CONFIRMED: The outro uses a creepy music box version of the iconic "Anne's Theme".
    • "The Hardest Thing" Outro CONFIRMED: The outro uses an extended version of "Anne's Theme" to bring the show full circle.

Marcy's death will be a Disney death.
Well, Disney is very good at bringing dead characters back to life, so Marcy being reborn is very likely.
  • Most likely, Maddie will bring her back using her resurrection spell from that episode where she and Marcy bonded.
  • Pretty much confirmed by the Season 3 intro, which shows Marcy on some sort of life support in Newtopia.

The Plantar family will meet Anne's parents.
Confirmed.

Anne will finally be able to share pizza with the Plantars
  • Not much else to say except that it was set up in season 1 and Anne says "you haven't lived until you've shared one with your friends in the mall". For bonus points, Sprig will order pineapple on his pizza and Anne will "murder" him.

Anne's parents will initially Freak Out upon seeing the Plantars.
  • Confirmed in the Comic Con 2021 preview.

Anne will have a Heroic Sacrifice to save her families (the Plantars and her biological family) and friends.
  • The Plantars, her family, and friends' love for Anne will revive her.

Sasha has not fully forgiven Marcy for stranding them in Amphibia.
She will either rant to Grime or Anne about how it's all Marcy's fault she's stuck in Amphibia (Anne might point out that they also share some blame) or upon her revival, berate Marcy before hugging her in relief.
  • Partially confirmed in "The Beginning of the End", where she admits to Anne she doesn't know if she could ever forgive Marcy. She ultimately does in "All In".

Anne will not tell Marcy's parents about her death.
  • She will come close to reluctantly telling them, when all of a sudden, Marcy appears out of nowhere. Overjoyed at first, Anne's relief turns to suspicion when Marcy acts different. As Anne will soon find out, this either isn't the true Marcy or her brain is being controlled.
    • Anne never actually sees Marcy's parents; she only sends an anonymous letter telling her parents that she'll return someday.

The US government will attempt to take the Plantars for study.
  • Sort of confirmed. In the S3 opening, the government is seen chasing Anne and the Plantars. But it is unknown why.
    • Just the fact that they're giant talking frogs already seems like a plausible answer. But what if the government is also aware of existence of the Calamity Box, the alternate worlds and Andrias' impending invasion?
      • Mostly confirmed; the government does indeed try to take the Planatars for study, but they're completely clueless about anything rrelated to Amphibia.

Maggie will reappear.
  • She appears in "All In", among the crowd rooting for Anne. She'll show up again in "The Hardest Thing", where she'll apologize to Anne and Marcy for bullying them, and revealed that she got it from her racist parents.

After defeating Andrias, the girls will choose to stay in Amphibia.

If Season 3 is split into two halves like Season 2 was, then Anne and the Plantars will make it back to Amphibia at the end of the first half.
  • Alternatively, some episodes will take place on Earth and some in Amphibia, alternating between one another.
  • Another alternative: one half of the two-parter episodes will feature the Plantars' Earth adventures and the other Sasha forming the resistance in Wartwood, the two storylines eventually culminating in the Final Battle
  • Another idea: the first half will start out as mostly Lighter and Softer to ease from the previous season's twisted finale, and then take a darker, more dramatic turn as the latter half rolls around and Andrias' plot unfolds.

Possible episode plots
1) Anne goes to school due to having a lot of catching up to do. Sprig and/or Polly get(s) curious about her school and secretly follow her. Hilarity Ensues until Anne's class begins dissecting... well, take a wild guess, and the climax amounts to Free the Frogs.

2) Ms. Boonchuy becomes somewhat of a mother figure to Sprig and Polly, but Polly feels confused about the idea of having a mother figure and leaves to do some soul searching.

3) The Plantars sneak in a movie theater to watch some films while trying to avoid being watched.

4) Hop Pop crosses paths with that human lookalike of his from the new opening, and Hilarity Ensues.

5) The debut of Sasha and Marcy's parents, and how they'll react to what their daughters have been up to.

6) A Villain Episode focusing on King Andrias.

7) One or two episodes centering on Anne's parents coming to terms with how she changed in Amphibia.

8) When Marcy returns, that episode will be made in the vein of Captain America: The Winter Soldier (but less Darker and Edgier than the film).

9) Anne will try to find someone or her parents help her with her anger issues.

Hop Pop will become fond of watching TV...
...And many of the programs will watch will be at least parodies of Disney productions (Gargoyles = Stone Warriors; Brother Bear = My Bear Brother; Frozen = Cold; Mickey Mouse = Ricky Rat; Big Hero 6 = 6 Young Superheroes; The Princess and the Frog = The Amphibious Princess; etc.)

Marcy will become Brainwashed and Crazy.
It's possible Marcy will be turned into some kind of cyborg under Andrias' control. Another possibility is that she will become a vessel for whatever Andrias' master actually is.
  • It's possible. She has inherited the power of the green gem, which represents the brain. Her powers will come into play in an episode where Andrias sends her to kill Anne. She will be reminded of the kind of person she really is and the memories will ultimately free her of Andrias' control.
    • And, Marcy will have no recollection of what happened while she was brainwashed after she breaks out of it. It will become a plot point later on where Anne needs to know what the King's master's ultimate plan is, and Marcy is the only lead to it. Anne will enlist Maddie's help in using magic to dig through Marcy's memories, so that Marcy can recall what Andrias said. The process involves strapping Marcy to a gurney or table, and the potion Maddie uses is very dangerous that it can only be administered in micro doses. Each dose will help Marcy recover a missing memory.
  • Andrias will also deliberately give the brainwashed Marcy some of the Calamity Box's energy in hopes of replicating Anne's Super Mode. If successful, it'll make Marcy an even bigger threat.
  • Andrias might also attempt to implant false memories into Marcy to make her believe she had history with him and that Anne and Sasha are her enemies he rescued her from. In doing so, it would establish a bond of trust with him that would enable her to give up even more of her deepest secrets.
  • It may be More than Mind Control. As we've seen in season 2, she gets bitter whenever Anne and Sasha fight, and its implied to be a regular thing with their relationship, making her feel like the one who has to keep the peace since she doesn't want to lose their friendship. That, combined with her family planning to move, will make her angry and resentful of them, and thus more willing to fight them. While they may still be mad at Marcy for their predicament in the first place, they realize she's right about them not being good friends and wish to make amends.
  • Confirmed in "Olivia and Yunan" where Marcy is forced to become the vessel for The Core.

Polly and Domino will have a Tom and Jerry-style rivalry.
Considering that Domino starts to chase Polly in the intro, there could be an episode that's an homage to Tom and Jerry ending with the two coming to a mutual understanding.

Marcy will indeed move with her family at the end of the series, but the girls will learn to accept it and will still be able to keep in touch.
It tends to be a cliché in shows (kids' or otherwise) that any plot point involving a main character potentially moving away from their friends ends up not happening after all, usually as a means of preserving the status quo. This show will subvert that idea and actually have Marcy's family move away at the end, but the three girls will learn to accept it and find a way to stay connected through it all - especially since they clearly have smartphones and social media.
  • Taking this further, Anne will also have to face saying goodbye to the Plantars, which is what drives Marcy's decision to return to her family. Likewise, Anne will also find a way to connect with the Plantars (maybe if they learn to use smartphones and can chat with her all the way from Wartwood). At least it won't be the first cartoon to break that cliché.

Sasha will still have some care for Marcy
Given that the picture of Grime shocked, while Sasha is horrified heavily implies that she is aware of Marcy being stabbed by Andrias.

Sasha will unite the toads with the frogs of Wartwood against Andrias.
The season 3 intro shows her with Grime and the other toads, plus Wartwood residents like Felicia, Wally, and Ivy all looking ready to fight, so perhaps as part of Sasha's redemption, she will convince the toads to work with the frogs, and she gets the frogs on their side by reminding them that they are helping Anne.
  • And in guiding and protecting the citizens of Wartwood, Sasha will learn what it truly means to be a leader. The experience will remind her of the person she once was - the kind of person who was willing to defend a pair of total strangers from two big bullies.
  • Confirmed as of "Grime's Pupil"

Mrs. Plantar is stranded on Earth and took the Calamity Box with her.
As King Andrias explains his backstory in "True Colors", one of his friends is shown to be a female frog with a remarkably similar appearance to Sprig. Then a silhouetted figure swipes the box. We can make the assumption this frog was Sprig and Polly's mother and she took the box in order to stop Andrias' plans, making a Heroic Sacrifice that would leave her and the box trapped on Earth. The Plantars and Anne will eventually meet her, probably in the mid-season finale.
  • Unlikely, due to the fact that the entire world of Amphibia forgot that the people of Newtopia were conquerors, meaning the music box would have had to have been stolen at least a hundred years ago.
    • However, that doesn't take away the possibility that she may be related to the Plantars somehow.

Frobo will be rebuilt.
Among the cast of human characters seen in the S3 intro, we see two girls with a robotic panda. They will be tech-nerds who Polly asks to rebuild her robot buddy.
  • The Season 3 poster shows his head attached to remote control car wheels. However, we don't know if the girls with the robot panda have anything to do with it.
    • Confirmed in "Fixing Frobo" and "Escape to Amphibia"

Mr. and Mrs. Boonchuy will help Anne stop the Silver Frog-Bot
A sneak-peek trailer of Season 3, showed Anne’s Parents geared in weapons inside the car, meaning that they are going to help their daughter stop the Silver Frog-Bot.

  • Confirmed in "Anne-streminator"

There will be some sort of historical connection revealed between Amphibia and Earth.
The S3 intro shows the Plantars hiding from guards while stuck in a museum. And alluding to those human characters, one featured prominently in the center is a woman wearing a card around her neck and a fossil shirt. Most likely she is an employee or even the curator of that museum. She will see through the Plantars but keep their secret, because she knows a little something about ancient amphibians - that the frogs, toads and newts of Amphibia originated from Earth!

There will be a Furry Confusion joke where the Plantars encounter Earth frogs
They will look on speechlessly at the smaller, nonspeaking frogs that do nothing but hop and croak.
  • And, said frogs are the same species as them, and they will exchange awkward glances.
  • Confirmed in Adventures in Catsitting.

It will be revealed that Hop Pop is Sprig and Polly's real father.
The reason it hasn't mentioned their father is because Hop Pop is keeping a secret.
  • Jossed, the secret is how Sprig and Polly's parents died.

This season will have a more serious tone to it than the first two seasons.
Most of the new intro may be goofy, but there might be some dramedy elements placed in...
  • Pretty much confirmed.

Anne and the Plantars will discover a second Calamity Box on Earth.
They'll come across it while researching Amphibia's past connection with Earth—though it'll be inoperable in some way and they'll need to get it working again before they can use it to return to Amphibia.

  • Jossed

Marcy survived due to her past connection with the Calamity Box.
Despite being drained in "The First Temple", it'll turn out that Marcy still possessed some residual energy from the Box, which allowed her to survive the grievous wound.

If Marcy does move with her family at the end of the series, Anne and/or Sasha will inspire her to make new friends.
Marcy's main motivation for getting the trio stranded in Amphibia was because she didn't want to be separated from her best friends. However, Anne and Sasha will remind her of the friends she made in Amphibia, even without the two of them to help her, thus giving her the inspiration to do the same back in the human world, wherever she ends up.
  • In "All In", they tell her no matter what they'll continue to remain friends.

The Plantars will live in the Boonchuy's basement.
You know, for ironic purposes.

Hop Pop's character arc will come to a head here.
The situation in which they are now will force him to take to heart the lesson he was taught in "Little Frogtown" and embrace change, change to some extent his views in parenting thanks to the Boonchuys, and finally be less overprotective.

There will be a bit of rivalry between the Plantars and Anne's parents.
The two groups will argue over who's a better family for Anne, but changes from a huge one to a Friendly Rivalry after Anne tells them to stop.

  • Jossed now.

Amphibia will experience a rise in technology following the series' end.
It is implied that the Plantars will be adapting to technology on Earth, which is far more advanced than anything their own world...except maybe for Andrias' robot army. This suggests that Amphibia may actually be more advanced than it has let on, but was held back due to the condition of its society. The amphibians uniting against a common enemy, combined with the Plantars' experiences on Earth, will lead to Amphibia evolving from a primitive Death World to something resembling Earth. They will even find a way to connect with Earth's signals, meaning Anne and the Plantars can still connect from afar.

The series will end with a Time Skip.
A year or so after the events of the finale, Anne will continue to connect with her friends, each of them having grown from their experiences; Sasha is now a better person and Marcy (assuming she really does move away) learns to adapt to her new surroundings. Amphibia has also become more prosperous, as has the Plantar's farm. Oh, and Polly is now a full-fledged froglet.
  • Sadly, it might also show that Hop Pop passed away during the time skip.

The Season 3 end credits scene.
Each season's credits has had a specific scene; Season 1 had Anne and Sprig sitting together while Season 2 had the Plantars and Anne riding Bessie along a trail. Season 3 will probably have something along the lines of the Boonchuys and Plantars chatting around the dinner table or the fireplace.

"Welcome To Amphibia" will play during the credits of the final episode.
Not only will this be a fitting soundtrack to cap off the series, but following the Time Skip theory above, it will also reference that Amphibia has become more welcoming since Andrias' defeat.

It will be revealed that King Andrias regretted stabbing Marcy.
When King Andrias said "Now look what you made me do", he sounded disappointed rather than angry. He only did what he did because his original plans didn't go the way he wanted to. Or he is being mind controlled by The Night.
  • Possibly confirmed in "Olivia and Yunan"; he admits that he likes Marcy and always has, even to the point of begging the Core to consider an alternative host and having a look of guilt on his face when the Core transfers into her, but says he has to do what he has to do. If he regretted those things, he'd surely regret having to hurt her.

The season will be split between events on Earth and Amphibia.
There will be a regular switch between Anne and the Plantars' adventures on Earth, and Sasha and Grime leading the resistance against King Andrias back on Amphibia.

  • Jossed, aside from two episodes, 3A is all on Earth and 3B all on Amphibia.

Marcy and Sasha will also gain a Super Mode.
King Andrias will use the power of the green gem to empower a brainwashed Marcy, using her as a counter against Anne. Sasha will also find a way to tap into the power of her gem, allowing her to help Anne against Marcy, so they can restrain their old friend and find a way to break Andrias' control over her. Once the brainwashing is undone, the three of them will work together to defeat Andrias and his master once and for all, using the very power the villains sought to aid in their conquest.
  • Given further weight by the "Mother of Olms" episode, where Mother Olm claims that Sasha and Marcy should have powers like Anne's but that Andrias' misuse of the Box prevented this and that Anne only retains a fragment of what should be her power.

Sasha is gonna have more appearances this season.
Since Marcy most likely has more appearances since her debut episode compared to Sasha's own debut episode, it's now Sasha's turn to have some of the spotlight.

  • Confirmed with Braly confirming her and Grime will be core cast in season 3B and the two appearing in every (or most in Grime's case) episode from "Commander Anne" onward.

There's gonna be some Flashback episodes that expands on the girls' toxic friendship and backstory.
Those episodes would show their relationship slowly falling apart before the series started as well as maybe give an in-depth on both Sasha and Marcy's home lives.

Heck, maybe it will even reveal that Anne herself might've had a role on the breakdown of their friendship, even if it's not as big as the others.

  • Additionally, it'll also show Marcy is the one who keeps the peace between Anne and Sasha. But it starts to take its toll on her, and combined with the fact that her family will move away, makes her desperate to have her stay with her friends at any cost.
    • In "The Beginning of the End", we see that Marcy is upset that Anne and Sasha don't try to get interested in her interests. Anne realize this is partially why she got them stuck in Amphibia.

Andrias will have a One-Winged Angel moment.
When he's on the verge of losing, he'll become a more feral newt not unlike Ratigan becoming a vicious rat during the climax of The Great Mouse Detective.

We'll see a montage of conquered or attacked worlds taken from various Disney and Disney X programs past and present.
The main hinderance to this being a Star versus era policy preventing it, but six years have passed since then and one Disney show, Future-Worm!, did cameo Gravity Falls, Star Versus, Wander over Yonder, and Pickle and Peanut. It is possible they'll be able to repeat the process, with a mixture of settings either resisting the Newtopian army or being conquered by it.

It will be revealed that there is a more than one Calamity Box.
Other possible existing Calamity Boxes may have different abilities.

Hop Pop will sacrifice himself in the final episode.

  • This sadly makes sense on several fronts, even without all the death flags—the Survivor Guilt over the heron attack that orphaned Sprig and Polly excepted, since the resulting vow to protect his family at any cost would likely be the primary motivation for any Heroic Sacrifice. If it's to save Anne—which it likely would be—it'll both let him fully forgive himself for burying the Calamity Box in his final moments and affirm that Anne is in fact a Plantar and has been at least since "Toad Tax". The tragedy would also likely result in Sprig and Polly being adopted by the Boonchuys (at least partly out of gratitude to Hop Pop) since their biological and now-eldest daughter would be the only family the poor kids have left, uniting Anne's human and frog families. This would give them the parents Sprig was sorely missing and, since we're talking about a human family adopting Amphibian children right after a senseless war of aggression against Earth because the latter's grandfather sacrificed himself to save the former's daughter, create a much-needed symbol of peace and a reminder that Andrias enjoyed virtually no support from his subjects.
    • And now we have a specific thing that could lead to this: Leif, or more specifically Andrias tarring all frogs with the same brush as her after her betrayal. If and when it dawns on Andrias that the Plantars are descendants of the frog who betrayed his trust and swiped the Calamity Box, and given that he plans to kill Anne anyway, he might decide to psychologically break them by executing her in front of them not unlike when he decided to "demonstrate" the folly of friendship by dropping Sprig, which would undoubtedly result in Hop Pop intervening.
    • Another scenario—the promo for "All In" shows Mr and Mrs Boonchuy being attacked by a heron... in other words, Anne's on the verge of being orphaned the exact same way Sprig and Polly were. This, like Anne herself being killed, would be intolerable to Hop Pop, who, on top of the guilt for betraying Anne even if she herself has forgiven him, likely still blames himself for not being able to intervene and will not want to see that happen to any other child, especially not his adopted granddaughter. If the attempt to take the herons down goes too badly, Hop Pop—who, for the record, is convinced Sprig and Polly's parents would still be alive had he been in Wartwood on that horrible day—may well intervene and help turn the tide against the herons, with fatal results.

King Andrias is being mind controlled.
To add to it, Andrias originally wasn't actually planning to conquer everything. Notably he had a whole army of robot frogs and a fully functioning Calamity Box on his castle yet there were no signs of him performing any conquests. Perhaps his friends truly did betray him and then Andrias got corrupted/mind-controlled by the creature in his basement who is the actual conqueror but can't move on his own.

The Waybrights and/or Wus will be antagonists.
Not believing or in denial of Anne's story, if she even explains it to them, they will suspect Anne of having killed their daughters and might report the Plantars to the authorities. That or they just hold a grudge that she returned in lieu of Sasha and Marcy, possibly telling her "You Should Have Died Instead".

Something will turn up Marcy's possessive tendencies up to eleven.
Once Andrias takes her out of the incubator, she will become a superpowered Misanthrope Supreme who cares only about herself, Anne and Sasha and wants to get rid of any other humans (and possibly the Amphibians). Anne and/or Sasha might have to talk her down in a "I Know You're in There Somewhere" Fight.
  • She would also want to rid of her parents, since they threaten to take her away from her friends.

In an argument, Anne or Sasha will tell the other "You Should Have Died Instead of Marcy".

Upon reviving, Marcy will again apologize to Anne and Sasha
  • Confirmed.

Marcy's siblings will be supporting characters.
  • Currently, we have no idea if Marcy even has any siblings to begin with given how they aren't shown in "True Colors" and given Marcy's fear on being alone, there's a chance she is an only child like Anne.

Anne and Sasha will rekindle their friendship.
Though Anne found out the hard way, she saw that Sasha was telling the truth and tried to warn her about Andrias' true intentions, that along with the fact that Sasha stayed behind to give Anne the chance she needed to get home. It will be a long and difficult road to recovery but Anne and Sasha will truly be friends again.

  • Seems to be confirmed with "Commander Anne" onward.

Maddie will play a vital role in breaking Marcy's brainwashing.
Assuming the brainwashing/possession theory is correct, Maddie, who bonded with Marcy late in Season 2, will use her magic to help break Andrias and his master's hold over Marcy and restore her back to normal. Her magic alone probably won't be enough to free Marcy, but it will give Anne an opening to reach her.

Anne and/or Sasha are Living Emotional Crutch(s) to Marcy.
This could be shown in a Flashback or after Marcy ends up recovering.

Upon reviving Marcy, Anne or Sasha will slap or shout at her for trapping them in Amphibia before hugging her
  • Jossed, they fully understand why Marcy did what she did and forgiven her.

Sadie, Wally and Loggles will play a huge role this season.
Well really, everyone will probably play a big role this season (this is supposedly the Grand Finale of Amphibia after all) but the end of the new intro displays these three in particular. Considering they're being paired up with the main characters of the show, they might play a larger role than we think.

The season will open with a flashback to when Anne first opened the Calamity Box.
The season premiere will begin with a flashback of what happened after Anne stole the Box, which will end with her opening it in a recreation of the first two seasons' intro.

By the end of the series (if this is the final season), Amphibia and Earth will co-exist equally.

I'm getting tired of "moving away/forced apart" concept that's been happening recently (How to Train Your Dragon's final film being a painful example).

Instead of keeping one world safe and possibly leaving one world behind (especially the people you know you could never live without), why not a compromise?

Anne will become the holder of the Calamity Box, so she, Sasha, and Marcy can head to Amphibia whenever they want and explore new worlds, and vice versa. The Plantars, as well as any good-hearted Amphibia citizen, could head to Earth and learn more of Anne's customs. After much understanding of the other's species, both worlds sign an agreement, which paves for a newer, brighter future. And Anne and the Plantars will be the ambassadors for each other's realms.

Anne will have the best of both worlds without having to leave her parents or the Plantars for the other. Humans and amphibians will live together peacefully, as suspected they might have been at one point long ago.

So think of it like the series finale of Star Vs. the Forces of Evil...only done right.

The girl Anne mentions in "Cracking Mrs. Croaker" will have an appearance.
Perhaps she's one of the humans shown in the intro. Or maybe even a classmate that Anne might've had a crush on. If it was a former crush, then Sprig and Polly would totally tease her about it.This would make Hop Pop's questions about her having a boyfriend Hilarious in Hindsight.

  • Jossed
    • Though she might appear in "The Hardest Thing" as a Brick Joke.

King Andrias will be a Disc-One Final Boss.
King Andrias will be defeated midway through the season, possibly with Marcy being freed in the process. Andrias' master will then take over as the main villain and be the Final Boss of the series (and if Marcy is freed, she'll provide valuable information on how to defeat it).

Season 3 will begin with Anne blaming herself for Marcy's supposed death, among other things.
This is rather inevitable, but witnessing Marcy being stabbed will surely affect Anne heavily. Marcy getting killed is something Anne feared for a long time, seeing as how she had to get Marcy out of dangerous situations here and there. Anne will constantly blame herself for Marcy's supposed death, and mention things like how she wasn't quick enough to get Marcy in the portal, or how she should’ve listened to Sasha about King Andrias, or how she shouldn't have grabbed the Calamity Box in the first place. Hop Pop and Sprig later come to Anne and remind her that Marcy's death was painful, but Anne can either continue to beat herself up over it, or she can take what happened as an opportunity to learn and try again. After hearing this, Anne will regain her determination and not let Marcy's death be in vain.

Anne will get her own scar at the end of the series.
Both Sasha and possibly Marcy (once her wound heals) ended up getting their own scars from all the adventures and traumas they've endured in Amphibia. Even if Anne's back on Earth, it's still possible for her to end up gaining a marking as a reminder of the events that transpired. This scar would possibly be marked during the final battle with King Andrias.

When Anne introduces the Plantars to her parents...
...She will explain everything quickly to them and show them the Plantars right before they could begin to doubt her story.
  • Jossed. Turns out, from a sneak-peak, the Plantar family ends up revealing themselves before they were supposed to due to a bit of miscommunication.

Bog will return in Season 3.
Following up on "Toad to Redemption," Bog and the rest of Frog Valley's Toad Tower Army will come back as secondary antagonists for the Amphibia-side of the story for Season 3. Bog will make good on his promise of making Grime "look like a softie in comparison" by siding with King Andrias and his plan of interdimensional conquest, most likely justifying it by "getting on the winning side," and be dismissive of the North Toad Tower's destruction as a necessary loss. Bog will become Grime's Shadow Archetype, leading to the two coming in conflict, which will help solidify Grime's Heel–Face Turn.

Sasha will don a suit at one point.
As Anne and Marcy have before.

Anne's family won't welcome the Plantars at first.
To be fair, if a group of freakish frog people came by with your daughter who has been missing for the last 5-6 months, you wouldn't trust them at first either. The Plantars will probably end up secretly living in the backyard or the local park until they gain their trust by saving them somehow.

  • Jossed, given they get along well in season 3.

Sasha and Grime will live at the Plantars' farm while Anne and the Plantars are on Earth.
  • Confirmed in "Turning Point", after they escaped from Andrias and later hid in Wartwood from getting captured. Sometime between this episode and "Commander Anne", the farm, with its underground tunnels, became the permanent residence of the Wartwood Resistance after the town was destroyed.

Sasha will be Forgiven, but Not Forgotten, and lose Anne as a friend for good.
She'll redeem herself and become a better person, making a real effort to truly atone for her mistakes, and Anne will see she's changed and forgive her... but none of that will change the fact that Sasha horribly betrayed her and tried to kill her adoptive family twice and was a terrible friend even outside of that. Even if they reach a peace and wish each other the best, their friendship is shattered beyond repair and their relationship is very unhealthy. Anne will realize that just because she forgives Sasha doesn't mean she should have her in her life, and will officially break off their friendship. Part of Sasha's Character Development is that, while she'll obviously be deeply upset, she'll accept Anne's decision and move on.

  • Jossed as "Commander Anne" onward do show the two trying to reconcile and being friends again.
    • Though Anne does say that the two will have a lot to talk about after all this is over.

Andrias' Master will turn on Andrias.
Giving that Andrias' Master is the true Big Bad of the series, once he rises to power and begin their conquest to take over the Multiverse, Andrias' Master will turn on Andrias and then reveals to Andrias that he was using him all along. Which will cause Andrias to realized he was nothing but a pawn to his own master and then he ends up being executed by his Master.

The Plantars will be surprised to learn that the United States of America is a Republic.
Taking how the Amphibia seems to be some form of absolute monarchy with a sort of quasi-feudalist species-based caste system. Though there are election, they seem to only happen at the lowest level of local government. Even then they seem to that there are rarely any opponents (especially those who are frogs) to the current toad Mayor and rigged in order to keep said caste system in place (going off of the events of "Hop-Popular" and "Reunion"). The Toad Lords seems to be Vassal for the King Andrais or the Newtopia government, ruling for their respective tower's region. And seeing that in "Marcy at the Gates", when Anne is surprised to learn that Amphibia has a King, Hop Pop response with, "We aren't Anarchy, Anne.", it seems that Amphibia never has any form of Democratic Government for anything bigger than a city.Even if they did, base on Hop Pop’s line about not being anarchist the majority of Amphibia probably believe that Hobbes Was Right or someone to at least act as a symbol to unite the people. Meaning that any "democracies" (or at least any government that was not a feudalist monarchy) that did exist at any point in Amphibia's history was probably either; very different from modern liberal democracy, been a constitutional and/or Elective Monarchy, didn't last very long or long forgotten (it happen with Newtopia’s Lost Technology). So perhaps if the Plantars ever learn about US Governments, they will be shocked or confuse that it is a Republic. Thought this would probably more surprised that Representative Democracy is currently the most common form of governments on Earth.

The Grubhog from "Grubhog Day" will return in season 3.
His war will play some role in the any episode taking place in Amphibia. He will either be a minor villain or an ally in the fight against King Andrias.

  • Maybe confirmed in "Olivia & Yunan" which shows Yunan fears it in the dream chamber.

One or both of Anne's parents will oppose her returning to Amphibia.
Even possibly sabotaging her attempts to return to keep her safe.

  • Jossed, they're supportive about it in Escape to Amphibia.

Ivy and Maddie are friends.
Despite not interacting for the first two seasons, Maddie’s younger sisters were with Ivy in “True Colors”, which might imply that she is friends with Maddie.

How Sasha and/or Marcy's disappearances will be handled to their families.
Either as the main plot or a minor subplot, an episode will touch upon the Waybright and/or Wu family still coming to terms that their children have yet to return home. As the Boonchuys attempt to console them, they will question Anne, who, out of fear of stressing them out, will probably not want to go into detail about Sasha leading an army or what Andrias did to Marcy (or really anything about them being Trapped in Another World) and instead make up a lie that they are staying at a hotel or something believable - and then the Plantars show up and inadvertently make the situation worse.

If this happens to be a plot point of the upcoming Christmas Episode, it will end with either Sasha or Marcy also returning home for the holidays and sparking hope to their family. I do believe one of them must remain in Amphibia to keep tabs on the situation there.

  • Mostly Jossed as the only nod they get is Anne writing Christmas letters assuring she will bring their daughters back in "Froggy Little Christmas", they don't appear in season 3A before Anne goes back to Amphibia.

Sasha's parents miss her.
Like Anne’s Parents, Sasha cared for her parents as she, like Anne, would never want to abandon them, with implies that her Parents likely miss her ever since she was stranded in Amphibia.

Marcy's parents miss her.
Despite revealing to Marcy that they were planning on moving due to her father having a new job out of state, her mother tried to call back to talk to her, which showed that she wanted to comfort her. and it will likely be revealed that they were worried about her ever since she was stranded in Amphibia.

Sasha will reunite with her parents.
"True Colors" confirmed that she would never wanted to abandon her parents, which might show that she will reunite with them once she gets back on Earth.
  • I don't know, that same episode she also had no problems threatening to destroy the music box as ransom and she doesn't even mention her own parents when trying to send Anne back home out of anger (just Anne's parents) so there is a chance while she certainly didn't consent to being separated from her family, she still doesn't have a good relationship with them.
  • Possible, since Anne's parents said they'll tell Sasha and Marcy's parents at the end of "All In".

Marcy will reconcile and apologize to her parents.
Despite stranding herself in Amphibia, with not wanting to return back to her home on Earth, she does at least regretted her actions, and will likely reconcile with her parents after she gets freed from Andrias and his master.
  • Possible, since Anne's parents said they'll tell Marcy and Sasha's parents at the end of "All In".

Andrias will use Marcy as sort of a living computer.
It's more or less certain Andrias will send scouts to Earth Anne will regularly encounter. Andrias will hold Marcy's mind captive, retaining her genius-level intellect, but not her free will. Andrias will connect Marcy's mind to the network of his robot army, and will use her mind to analyze the scouts' failures and adapt them to create new tactics, not unlike what happened to Echo.
  • Confirmed as of "Olivia & Yunan", albeit in a different way. Rather than being connecting to his robot army, Marcy's mind has been connected to the Core.

The supposed Hop Pop lookalike in the humans group shot of the Season 3 opening actually is Hop Pop.
While he's shown in a rather shoddy human disguise a few shots earlier, that disguise may be a prototype that gets used prior to a much better one being made.
  • Alternatively, it could be that something transformed him into a human.
  • Jossed. He (Humphrey Westwood) is an actual human who happens to resemble Hop Pop, both in appearance and goals.

The opening credits will change over time.
In particular, the part with Marcy in the healing tank. If she really does end up getting controlled by Andrias' master, then that section will be replaced with one of the brainwashed Marcy posing threateningly or attacking the heroes. And if she is freed before the end of the series, it'll again be changed, possibly showing Marcy looking guilty over her past actions.
  • Confirmed as of "Olivia & Yunan". Jossed partially for "Commander Anne" onward though still showing Anne and Plantars on Earth in the intro despite being back in Amphibia by then.

Andrias will have a Villain Song.
Because it's Disney.
  • And with a brainwashed Marcy

Sasha and Ivy will become friends.
Anne and Sprig have been the best of friends since day one, and while it wasn't explored beyond the one episode, Marcy was quick to bond with the equally eccentric Maddie. If the writers intend to continue this trend, than Sasha will inevitably form a friendship with the last named frog child in Sprig's age group.

Anne is gonna develop trust issues after all the betrayals she endured.
She's not going to forgive Sasha and Marcy as easily like in the past. Plus all those betrayals would probably take a toll on her. As a result, Anne would be more suspicious and secretive before opening up to others.

  • Confirmed in "Fight at the Museum"
  • In "The Beginning of the End", she's learned to forgive Hop Pop and Marcy.

The stress from the season 2 finale will cause Anne to have trouble controlling her new powers.
Anne will be severely emotionally affected by everything that happened and this will bleed into her new powers, causing them to activate at inconvenient times. It may also lead to moment where she accidentally or almost accidentally hurts her family during one of these flare ups, causing Anne to view herself as a monster.

Mr. and Mrs. Boonchuy will accept Anne with her new powers.
The sneak-peek trailer of Season 3, showed Mr. and Mrs. Boonchuy watching Anne’s new powers while fighting one of the Frogbots, and the end of the trailer shows Mrs. Boonchuy smiling towards Anne while the latter is sleeping.
  • Confirmed in "Anne-sterminator".

Anne, along with another person, including her family will stop the Government.
A sneak-peek trailer of Season 3, showed Anne, and a Unnamed woman kicking the door, presumably on going to save the Plantars from the Government.

  • Confirmed with the FBI plot in "Escape to Amphibia"

RuPaul will become a villain in Season 3
Since it has been confirmed by Matt Braly that Ru Paul will be guest-starring in Season 3, RuPaul will likely be an Adaptational Villainy while working for the Government on stopping the Plantars. There is also a character that resembles him in the Season 3 intro, and it’s trailer in the sneak-peek.
  • Confirmed. RuPaul's character is a minor antagonist named Mr. X.

RuPaul and the Government will side with Anne when the Government that the Plantars are not a threat but find out that King Andrias is the real threat.
There is the possibility that RuPaul and the Government will side with Anne after a fight with several Frog-Bots but they would consider that King Andrias is the real threat
  • Possibly, since the end of "Escape to Amphibia" has Anne's parents about to "have a word" with Mr. X.
  • Confirmed in "All In", as Anne's parents revealed that they told him everything and prepared themselves.

The Government will invade Amphibia
Or at the least a preempitve strike.
  • Possibly by Mr. X's superior in "The Hardest Thing". Mr. X telling him not to, but his superior ignores him.

Yunnan and Olivia will rescue Marcy
The sneak-peek trailer of Season 3, showed Yunnan and Olivia through a temple, and with Yunnan holding Olivia while attacking the Frogbots, and taking Marcy with them after presumably freeing her from Andrias.
  • Confirmed in "Olivia & Yunan", although Marcy is recaptured by the Core.

Yunan and Olivia's attempt to rescue Marcy will fail.
Yunan and Olivia will try to free Marcy, but unfortunately Andrias and his robots will stop them, resulting in Marcy being recaptured while the other two are imprisoned or worse (depending on how dark the episode is).
  • Confirmed in "Olivia & Yunan".

Yunan and/or Olivia will be double agents for the resistance.

Anne will have to destroy the Calamity Box
It's inevitable, since the Calamity Box has proven itself to be too dangerous for the fabric of reality, and as long as King Andrias has it, no one is safe—not on Earth, not on Amphibia. Anne will face a dilemma of whether or not to destroy it, as doing so will mean she will never see the Plantars again.
  • Not only that, but if the box is destroyed, the gems remain and bond with their respective girls, giving them the power to traverse worlds themselves as well as bestow each of them a Super Mode.

As the trailer suggests, there will be a flashback episode of Marcy first appearing in Newtopia.
And it will be the official debut of Marcy's teased Theme Song Takeover.
  • In "Olivia and Yunan", there's a brief flashback scene with Marcy that took place shortly after her arrival in Newtopia, which shows her leg in a cast after her fall down a flight of stairs in her Theme Song Takeover.

The Night is related to the Axolotl
More of a crazy theory that I don't see being true due to the fact that it heavily relies on Easter eggs/coincidences.

In the promo for Amphibia Season 3, we see what appears to be Marcy Wu being possessed by the enigmatic eldritch abomination and Andrias' master the Night. We hear what could be him speaking to Marcy telling her that it was time for her to "say goodbye to those childhood friends of hers."

With Marcy being fully possessed, we see that she is wearing what looks like armor, or at the least, she merged with the Night through some unknown means. But looking carefully at Marcy's form, what comes to mind when taking a more analytical glance at it?

An axolotl.

Now, that by itself isn't really significant at first glance, but I want you to really think about it: what other Disney show featured an axolotl or at least alluded to one? That's right: Gravity Falls.

You would know of the Axolotl first from the backward message Bill gave when he was being erased as a means of invoking his name. In one of the non-canon books, Dipper and Mabel meet the amphibian god in all his frilly glory and he tells them some nice facts on Bill.

So with that, it got me thinking back to how the Night's appearance appeared to resemble an axolotl in its "horn-like" appendages. So, here is where the theory comes in: what if there is some connection between the Night and the Axolotl.

The Axolotl...don't worry, not going to suggest that he is evil. For the most part, the Axolotl appeared to be a benevolent being, though he did have contempt for Bill Cipher. I mean Bill was a dimension-destroying maniac so can you blame him? But even then, he is implied to have given Bill a second chance at life...but in a different form and a different time should Bill wish to shirk the blame of his past sins. So instead of suggesting that the Axolotl is two-faced...what if instead, he had an evil brother and that brother would be the one attempting to undo some prophecy in the world of Amphibia?

I mean, it would make a lot of sense. The Night takes on an amphibian-esque appearance and is implied to be a near godlike being. What if the Night shares similar powers to the Axolotl and, much like the triangular, demon nacho, struck deals for its own end?

Of course, the two shows are different in terms of writing, characterization, and there is the fact that just because Matt worked on one show does not mean an automatic connection between them. But...the show does have a few nods towards Gravity Falls, some subtle, more blatant. Like, take the Curator from the Wax Museum episode who is not only voiced by Hirsch, but looks like Grunkle Stan in a frog form. Or take how it has a similar dark comedy regarding death. But the Axolotl having a brother would also fit in snuggly with the sets of twins we have in GF: Dipper and Mabel; Stanley and Stanford, etc.

So, the idea I have fuming in my mind is that the Night and the Axolotl are siblings each with supernatural powers to give them deity status. It could be that the revenge that the Night is seeking is on his brother.

Andrias will betray his Master
Given that it's revealed that he isn't very loyal towards his Master, The Night, it is likely that he will betray him once he tries to conquer the Multiverse.

Sasha will lose one of her eyes
Most people have seen the promos with her being surrounded by one-eyed amphibians. In the Battle of the Bands episode, a beam of light can be seen over her eye. It could be foreshadowing.

Anne's parents will learn everything in the first episode.
Despite Anne's attempts to keep it under wraps, her parents will learn everything—Sasha and Marcy's fates, her new powers, Anne's plans to return to Amphibia—over the course of the episode, with the Planters and/or Anne herself inadvertedly letting these details slip out. In the case of her powers, the Boonchuys will learn about them when Anne accidentally activates them during an outburst.
  • Partially confirmed, they learned a lot and because Plantars botched the "staying hidden before Anne can ease them up" part. But by the end of the episode, they still do not know about Sasha or Marcy's actions, Anne's powers or that there is a giant newt sending assassins after their daughter. They do find out about the latter two in "Anne-streminator, but not the former before Anne goes back to Amphibia.

Bessie will help Sasha and Grimes return to Wartwood.
Having been left behind by the Planters, Sasha and Grimes will encounter her while escaping Andrias' forces and she'll help them return to Wartwood (perhaps after some reluctance on Bessie's part due to Sasha and Grimes' past misdeeds).
  • Jossed. Sparrow Joe helped them get to Wartwood.

once rebuilt, Frobo will duke it out with Andrias' assassin
The latter is blatantly the former's Evil Counterpart, it feels obligatory.
  • Jossed, as this never happened.

King Andrias is not from Amphibia
He was just one officer from an army of many, many other like him (his ancestors, the "glorious conquerors", he was talking about), but somehow got cut off from his main force and his commanding officer, which was on his command ship for an inspection ("The Night" i.e. Andrias master), got mortally wounded and had to be put into a life support machine (the giant machine with the many eyes in the Newtopia Castle) to save him. King Andrias now either wants to search for the main force on other worlds or wants to avoid the main force and wants to build a kingdom for himself. Got the idea from here.

King Andrias was lying when he was talking about his ancestors being "glorious conquerors"
His master and him were actually mutineers who took powerful military equipment (the floating castle and the fabrication units to make the battle robots) in an coup attempt so his civilization would become "glorious conquerors". The coup failed, his commander was mortally wounded and had to be put into a life support machine (the giant machine with the many eyes) and they took their hardware and fled to Amphibia.
  • The people of the country/planet he betrayed will find his base on Amphibia and ally with Anne, Sasha and the Amphibians to bring Andrias to justice (for treason, war crimes, and so on). The punishment will be death and the newts will restore both Amphibia's and Earth's environments and give them development aid (how to become a high-technological civilization without fucking up the environment) as compensation for their traitorous compatriots' misdeeds.

While Marcy's body will be by possessed by Andrias' master, her mind will leave her body as a living ghost
Which then goes to where Sasha (and Grime) were to warn them more about Andrias's plans and so forth.

Olivia and Yunan are in a Secret Relationship with each other.
Either that or they're in love with each other, but haven't confessed it to one another yet.

Also, Marcy is going to be the first person to find out about this a bit after she finally gains some control of her mind when they go and save her.

Marcy had pulled a Face–Heel Turn, independent of or only partially fuelled by the Night's influence
Believing that her friends have abandoned her and suffering in the rejuvenation tank, Marcy's unhealthy tendencies will overboil to the point of If I Can't Have You…. After defeating the Night and freeing Marcy, Marcy will still attempt to attack her friends.

The Night's "Don't you think it's time to say goodbye to those childhood friends of yours"? could have been an offer rather than a threat.

The butterfly Anne won for her mother turns out to be useful
Anne has yet to give her mother the butterfly pin she won back in "Hopping Mall"; once she finally does, she realizes the butterfly is actually some magical artifact, which will probably open up a portal that leads back to Amphibia.

  • Maybe jossed, it was given as only a Christmas gift to her mom in "Froggly Little Christmas"

If/when Anne returns to Amphibia, her parents will brought along with her
Mr. and Mrs. Boonchuy will end up in Amphibia with Anne, most likely unintentionally (like attempting to stop their daughter at the last minute), similar to how the Plantars wound up on Earth with her, and sharing their elements of Thai culture with the residents of Wartwood. There, they will go through the same experiences Anne did, but with Anne to guide them through it. Domino also tags along and causes some of the Wartwood residents to panic, mistaking him for a kill-a-pillar.
  • Jossed, Anne and the Planters do return to Amphibia in "Escape to Amphibia", but Anne's parents remain on Earth.

Anne will use Andrias' robot assassin to get back to Amphibia
Andrias not only ordered the robot to assassinate Anne, but also to get something from Anne's world (the newest issue of a novel series Marcy read), meaning that he has some way to get things from Anne's world to his, so Anne and the Plantars are gonna hitch a ride with their would-be killer (reprogramming? faking Anne's death so that the robot thinks he's done and will either contact its master or go to a pre-arranged drop-off point?).
  • Probably jossed, as it's apparently destroyed for good in "Anne-sterminator".

King Andrias is Anne's Foil character.
If you noticed, both Anne and King Andrias have cinematic parallels. Both represent the color blue, both are outgoing, funny, have a goofy side, both had some sort of betrayal of close friends, and they have similar names. King Andrias feels like what would happen if Anne went down a dark path.

The robot assassin is still alive.
While we saw it completely blown up in "Anne-sterminator", what if its head survived like Robo? Or its computer chip survived? Either way, not only does it survived and rebuilt itself, but it goes beyond its programming. It would no longer follow King Andrias' orders, and probably decide to kill him, but will still try to kill Anne only because It's Personal this time. If it does kill Andrias, it will become the True Final Boss in the Grand Finale if it isn't Marcy or Andria's master.
  • "The Hardest Thing" will have the Core finding its remains and used it as its new (temporary) body.

The prophecy will be fulfilled.
From Andrias' book, the prophecy roughly translates to: "Three stars burning bright, come from beyond to expel the Night. Should they fight or embrace the fall, their choice will determine all." The "three stars" refers to Anne, Sasha and Marcy, while "Night" refers to Andrias and his Master. The girls must learn to embrace the Calamity Gems they represent and channel enough forces within to determine the fate of their home worlds; if they make the right choice, then they can use their powers to defeat Andrias and his Master once and for all.

  • Related to this, Andrias' attempt to undo the prophecy actually furthered it, perhaps even set it into motion, as it couldn't be fulfilled until the girls discovered his true nature and that he wasn't loyal to Amphibia but to some thing, and presumably until their friendship had been purged of the toxicity that Andrias exploited. Sasha and Marcy were always going to sever their connection to the stones (at least temporarily) and the Calamity Box was always going to fall into Andrias' hands because this initial victory lulled him into a false sense of security. It could be the case that Valeriana intentionally charged the stone obnoxiously slowly because she knew Anne's desire to protect her friends would cause her to lose patience if she believed they were in danger, resulting in her retaining her connection without tipping her off that Andrias is evil too early and severing the chain of prophecy.

    As for the utter disaster that was the ending of "True Colors", that ties in to each Star's role in the prophecy—i.e. Anne as The Heart and the one Star to keep her connection to her stone throughout, Sasha as a toad warrior and former Control Freak disillusioned with the idea of being completely in control after she ended up leaving herself helpless to prevent the tragedy, and Marcy as the Star closest to Andrias prior to him revealing his true nature. Anne was always going to end up on Earth with her frog family and without Sasha or Marcy because she needed to adjust to her powers to some degree, gather human allies (possibly including Mr. X after he actually listens to her parents about the situation), find the pink frog's message directing her to Mother Olm (because anyone who hadn't been to Amphibia would think she was a frog-like goddess or a cryptid, and the secret message would be illegible to anyone who can't read Amphibian script, meaning it could only be directed to a human who made it back home but plans to return to Amphibia and has no means to), give Earth advance warning, and have a personal reason to return to Amphibia; Sasha was always going to rally Wartwood against Andrias because she needed to give Anne both an army and actual evidence that she's trustworthy after the whole "I planned and enacted a Military Coup and expected my friends to be cool with it" thing; and though the poor girl never deserved it even though she likely thinks she did, Marcy was always going to be stabbed because the Calamity Box had to stay in Andrias' hands, and she was always going to be possessed by the Core because one of the Stars had to find out about it and tell the other two what exactly it was that bodyjacked her once she was herself again. As for the toad-like monstrosity depicted in the mural, maybe it's a Custom-Built Host that Darcy is currently bioengineering because it knows it'll lose Marcy's body sooner or later, whether the possession kills the poor girl or she's freed from its control before that can happen.

    Long story short, the stones being charged and everything that happened in and since "True Colors", far from being incompatible with the prophecy, was actually part of the prophecy. Can't exactly expel the Night if you don't know there's a Night to expel, and Andrias has both ensured that Anne and Sasha will learn about the Core and made fighting it personal.

Sasha and Marcy's parents won't be seen in the show.
With most of the characters in the season 3 intro already featured in various episodes, and the few remaining ones unlikely to be related to Sasha or Marcy, as well as none of the upcoming episodes' descriptions so much as mentioning their parents, we're probably not going to see them.
  • Or they do show up once they read the letters Anne wrote to them in "Froggy Little Christmas". They might recognize Anne's handwriting.
    • They might appear in "The Hardest Thing" since the last episode has Anne's parents planning to tell them about their daughters.
  • Confirmed unfortunately. They don't appear in "The Hardest Thing". Meaning they aren't seen at all in the show.

Mr. X will work for King Andrias
His constant failure to capture the "alien frogs" and being outwitted by a 13 year-old girl will make him an even bigger laughing stock and get him fired. As a payback against the world for all the misfortune that befell him, he will help Andrias to invade Earth

Alternatively...
...he will just pretend to be on Andrias' side, will be actually an double agent in the employ of the CIA or an Amphibia-verse S.H.I.E.L.D. equivalent to wait for a chance to assassinate Andrias and, if possible, seize his advanced hardware.

The Boonchuy, Dr. Jan, and Terri will help stop the Government
Well, they will try to prevent the Government from taking The Plantars away, since they are trying to find them.

  • Confirmed in "Escape to Amphibia"

Anne's Acquaintances will defend The Plantars from the Government
Well, they did help The Plantars, and even befriended them. So, they will likely defend them from The Government if they try to capture them.
  • Confirmed in "Escape to Amphibia"

Anne will promise her parents that she will come back home after finding her friends
While she will be going to Amphibia to find her friends, she will likely tell her parents that she will promise that she will be coming back to Earth after finding them and presumably stopping Andrias.

In a somber turn of events, Marcy will use the Night instead of the other way around
Since she feels awful about her friends wanting to possibly ditch her for what she did, she'll use all the knowledge she gained to force them to remain her friends, remaining dominant in the mind fusion Andrias enforced on her. Part of the final conflict will be about Anne and Sasha reaching out to try and offer Marcy a better way to handle their families separating and forgoing the multi-spirited conqueror of world overlord route.

Sasha will return to the Third Temple.
Sasha and Grimes will go there either in an attempt to find a way back to Earth and rejoin with Anne or to try to find a way to give Sasha powers like Anne. Either way, the end result will be Sasha recieving her own calamity powers.

Encountering Darcy will cause Anne to lose control of her calamity powers and go berserk.
She's been bottling up her "True Colors"-related trauma and fears about Sasha's and Marcy's wellbeing since she got back to Earth, which has already had a negative impact on her mental health (robbing a museum because she's not willing to trust the curator, anyone?). The Plantars can tell it's not a matter of if but when she breaks, and discovering that Andrias turned one of her childhood friends into the host of some Eldritch Abomination, which would undoubtedly be a devastating revelation even if she was emotionally sound, seems like just the thing to cause that to happen; such a horrible, traumatic discovery happening to someone with a Super Mode, especially one she initially unlocked by flying into a grief-fuelled unhinged rage and one she hasn't been using enough to get used to because it physically exhausts her, is a perfect recipe for the poor girl going berserk. The result will likely be her staying, perhaps even being stuck, in that form for an extended period of time, leading to the Heroic RRoD that her remark about her powers feeling bad seems to be foreshadowing.

To free Marcy, Anne and Sasha will have to interface directly with the Core.
Anne and Sasha will have to allow their minds to be connected to the Core so they can find and free Marcy's mind from the machine—while also trying to avoid having their own minds absorbed by the Core.

Marcy is in danger of suffering Possession Burnout.
It'll turn out that Marcy's body isn't strong enough to handle the Core for very long and will soon burnout. This will add a ticking clock element to the plot with Anne and her allies having to save Marcy before it's too late, while the Core will be looking for a way to either fix the problem (possibly by giving Marcy some energy from the Calamity Box to strengthen her) or find a suitable replacement.

  • Alternatively, she has the potential for a Super Mode similar to Anne's that Darcy will unlock and use with reckless abandon, well beyond what Marcy's body can handle, because, much like Bipper, it doesn't give a flying frog about its host body's wellbeing... at least, not until the Villainous RRoD that results in Anne and Sasha managing to free Marcy.

The commercial director is related to Sasha.
They have the same hairstyle similar hair color, and were/are in control of something and have dismissive attitudes with regards to certain scenarios. Perhaps she's an elder sibling, a cousin, or her mother.

Darcy/The Core will end up betraying King Andrias once his usefulness is at an end.
King Andrias: You said we would rule over countless worlds together!
Darcy: Oh Andrias, We would've said anything if it meant you'd get us a new host. Hate to break it to you, your majesty, but you’ve been duped.

Dr. Jan will hire Terri as her assistant.

Andrias will allow himself to be assimilated into the Core, but it will end up being more horrible than he imagined and he'll beg to be released.
The Core itself is made up of Amphibia's greatest minds throughout history. Andrias himself is pretty intelligent, and he seems to revere his master to a great degree. Since the Core is the Greater-Scope Villain of the series, Anne and her allies will likely not be defeating Andrias directly. But as part of his defeat, he'll willingly join the Core, only to realize just how hellish it is to be part of a literal hivemind, getting destroyed when the Core itself is defeated.

Sasha will decide to stay on Amphibia and not return to Earth
"Froggy Little Christmas" shows that Sasha’s parents are divorced or separated, which would certainly mean Sasha doesn’t have a stable family life, and whichever parent she lived with just isn't there for her emotionally. “True Colors” also had Sasha decide she wants to stay in Amphibia. Because of all that, Sasha wouldn't feel like there’s anything on Earth for her anymore.
  • Additionally, instead of wanting to rule, she's going to be a sort of peacekeeper, making sure the Frogs and Toads get along. As part of her redemption arc.
  • As part of this, if she got her negative traits from her parents, especially if those traits were what ruined their marriage, she'll outright disown them, perhaps even Shed the Family Name, to signify both that she has no intention of returning to Earth and that she's no longer the Control Freak their influence made her.

Mr. X and Dr. Flakes will end up working together.
They both have a grudge against Anne for foiling their plans for the "frog aliens", and they are both considered crazy by their peers which led to their bitter It's All About Me personalities.

Anne is deliberately avoiding investigating the antique store where she stole the Calamity Box.
Because she doesn't want to confront the fact that she shoplifted, she's worried the owners of the store will recognize her, and she doesn't want to admit that she's a shoplifter to the Plantars and/or her parents.

Andrias will turn on the Core.
Darcy will continue to belittle and mock Andrias until he has enough of it. He'll betray the Core by refusing to help it during its fight with Anne and Sasha, resulting in its destruction and Andrias becoming the sole villain for the remainder of the series.

The Core will betray Andrias.
The Core reveals it had its own plans and only instructed Andrias to do what they want; in addition, the Core didn't want to rule alongside Andrias as he thought, they prefer to rule on their own, and Andrias is no longer any use for them since all goals have been fulfilled, and flees him.

Once both Sasha and Marcy's parents actually appear, there's going to be a lot of family drama involved.
As a contrast of Anne having two happier families. Plus it's implied that there's such conflict, especially since it's implied that Sasha's parents are divorced.
Bonus points if one or both of them have siblings as well.
  • Additionally, they'll blame Anne for what happened to their daughters. It'll also reveal that Marcy's parents never liked Anne and Sasha, since they see them both as a bad influence on their daughter (Anne for being irresponsible and Sasha for being controlling). Anne's parents of course will defend her, saying that she's matured since then and call them out for how they treated their own daughters. Though Sasha and Marcy's parents will point out that Anne is still keeping secrets from themnote .
  • They might show up in "The Hardest Thing".

Alternatively, Sasha and Marcy's parents will turn out to be completely regular normal loving parents after all.
If this's the case, it'd be kinda funny in retrospect considering how they're usually demonized by the fandom.Sure, Sasha's parents are heavily implied to be divorced but still...
  • It would be revealed that Sasha's parents have been unhappy with their marriage, and believe it's best that they get a divorce. They have become Amicable Exes. To Sasha, she wasn't happy with the change in her life, and her Control Freak tendencies was the result of her desire to keep things the same. So when Anne finally stood up to her, Sasha is afraid she's once again closing control.

The fate of the prototype drone.
Anne and the Plantars never realized the prototype drone which is what caused the giant Santa to go all evilly like that; maybe the I.T. girls have found the drone after the parade was over, and they might engineer it to work as a weapon against Andrias for the heroes.

Tritonio is the one Anne and Sprig are going to rescue from Newtopia
If the silhouette is any indication, it might be highly likely that Anne and Sprig are going to rescue Tritonio.

Marcy being released from the Core's control.
Anne pulls the old "I Know You're in There Somewhere" Fight, causing the Core to weaken; Sasha then uses her strength to knock her out; she would then destroy Marcy's helmet, releasing the Core and freeing her from its control.

The core will possess Andrias.
After the Core is released from Marcy, the Core goes full You Have Failed Me on the king, thus it takes control of him and makes him an even bigger threat.

Anne's connection with her stone will protect her from death.
Probably if Anne receives any end of a fatal attack, she will experience a Disney Death instead, as her connection with her stone will bring her right back to life moments later.

It will be revealed that Hop Pop is not Sprig or Polly's grandpa, but he might be their uncle or great uncle.
Reason why this is possible is due to the fact that Grandma Plantar has not been mentioned once at all and we are in the last season of Amphibia. Since the series has a lot of lying and betrayal, it would make sense.

The series is gonna end with a Bittersweet Ending.

Andrias will help free Marcy.... but not for any alturistic reason.
Andrias will come to realize that he really did value Marcy as a friend and will help free her from the Core.... not because he realized what he did was wrong, but because he wants to convince her to join him in his multiversal conquest. He'll be enraged and confused when Marcy rejects his offer.

When Marcy opened the portal to Earth, she reconnected herself and Sasha to the Calamity Box.

The pink gem is noticeably dimmed in "The New Normal", and while the green gem is at full brightness, the People Jar Marcy is trapped in is glowing green. This may mean that Sasha and Marcy are now in the same semi-connected state Anne is in as a result of not fully charging her gem. If this is the case, it's part of the reason the Core refused to consider any prospective host that wasn't Marcy, as she now comes with the bonus of a Super Mode to counter Anne's, a sorely needed edge since Andrias' efforts to kill Anne have proven to be a fool's errand.

The Boonchuy-Plantar clan (assuming Anne's parents tag along) will be separated upon fleeing Earth.
With a title like "Escape to Amphibia", it seems like, whether because of Mr. X getting involved, the invasion beginning, or both, the return to Amphibia will be too desperate to think through, which has the potential to result in an Involuntary Group Split. Obviously, given that there's an episode focused on Sprig and Ivy, Sprig will end up in the group that makes it to Wartwood, and the first half of that block being titled "Commander Anne", assuming this does end up happening, could suggest Anne's group ends up joining one of the non-Wartwood resistance cells, but otherwise, whether the split happens along human and frog gender lines (i.e. Mr Boonchuy and Hop Pop end up in Wartwood, Mrs Boonchuy and Polly end up travelling with Anne) or is just purely random is up in the air.

As for their allies on Earth—who may be along for the ride—even if the Boonchuys and Plantars are split along gender lines, since nearly all the named allies are female, which group they end up with is a wild card. However, Ally and Jess might end up in different groups, giving each group a robotics expert—very necessary, given that Andrias' army consists almost entirely of Mecha-Mooks—and further motivation to reunite with the other, since Ally and Jess would be worried sick about each other, especially Team Sprig's I.T. Gal, who will know for a fact her girlfriend is stuck behind enemy lines. The possibility that Mr. X will realize that the Plantars aren't a threat, pull a Heel–Face Turn, tell his superiors something along the lines of "See? I was right about the frog aliens! Only thing is, they're not our enemy", and end up in Amphibia should create an interesting dynamic with whatever group he ends up with, since he's a would-be-former Arc Villain and will have to earn that group's trust, perhaps through intelligence gathering.

Whatever the case, should this happen, Anne's goals for the next few episodes will be to find the "mother of olms", find clues about Sasha and Marcy (the former will lead her to Wartwood, the latter may result in a Badass in Distress situation), and reunite with Team Sprig; in the process, she will likely become a Hope Bringer as a result of having to face Andrias' forces repeatedly, giving Sasha and Team Sprig clues about where Team Anne is but also making Team Anne vulnerable to being discovered by Andrias—or worse, Darcy—leading to them being captured (as by this point, Andrias will know he has lost his opportunity to outright kill Anne because he now risks martyring her). The Two Shorts format will allow Anne and Sasha to take turns as protagonist (one segment continuing Anne's stint as a budding Jeanne d'Archétype, the other continuing Sasha's redemption arc) until the Internal Reveal of the Core and the resulting mission to free Marcy causes these arcs to converge, leading to Big Damn Reunions all around.
  • Well, looks like this is Jossed.

Some of the wildlife we've seen are not native to Amphibia

Amphiba's frequently shown a large array of creatures, some of which don't quite fit in. The world's mostly made of insects, arthropods, and reptiles, so an enemy that's a giant weasel is out of place. With so many flying bugs, where did the Love Doves come from? Like the Moss Man, these creatures are not from Amphibia originally, but originated from expeditions to other worlds. They may have been research subjects, pets, or part of zoos that managed to escape and proliferate in the wild. In fact, they might even have created ecological chaos that helped create the Death World that Amphibia is by making the ecosystem go out of control in compensation.

Andrias will have an utterly humiliating defeat
The invasion of Earth will end with a Disney Villain Death for the Core. And as for the overgrown newt king, one possibility is that he'll be captured by Mr. X and subjected to demeaning and torturous experiments (offscreen).
  • Or alternatively, once Marcy is finally rescued, the Core will get sick of Andrias failing them all the time and decide to kill him before possessing his corpse, thus allowing him to finally be with his ancestors in a way.

After Andrias will be defeated (and possibly killed), Amphibia will become a republic or at least a constitutional monarchy in the vein of the European monarchies

Newtopian technology will proliferate on Earth after Andrias' defeat
  • Ally, Jess and Terri will become the three richest women on Earth by being the ones to analyze, develop and market Newtopian technology on Earth because of their contributions to the war effort.
    • Ally and her girlfriend/wife Jess will become heroes of all who lost a limb or organ by marketing Andrias' robotics and medical technology in the forms of bionic limbs and newly-grown organs.
  • The Calamity Trio will become their employees
  • Humanity will become a planet-spanning civilization though the use of Terri's portal technology
    • Do you mean multiverse-spanning? Also, considering humanity's historical track record, I don't think it's wise to give the entire human race the ability to travel between universes.
  • Humanity's energy crisis will be solved by analyzing & duplicating whatever energy source Andrias uses to power his stuff

By the end of the season, Anne will lose her arm
There are many hints that it may be possible, one of them being when her arm got broken in Season one. How it happens is unknown, but after Andrias' and the Core's defeat, Anne's arm may be broken beyond repair or completely removed during or after the battle.
  • Jossed. Grime is the one who ends up losing an arm.

Leif and Barrel will appear at least one more time
Like how "True Colors" opened with Marcy finding the music box, one of the last remaining episodes will have a flashback taking place shortly after the events of "The Core and the King". After her meeting with the Olms, Leif runs into Barrel on one of his missions. They are encountered by the narwhal worm and Barrel pulls a Heroic Sacrifice to save her as she opens a portal to Earth note . What follows is a montage of Leif leaving secret messages and how the box eventually winds up in the store.
  • Also considering the high implications that Leif is related to the Plantars, one must wonder whether or not she made it back from Earth.
    • Confirmed for Leif in "All In", as she is shown in flashback returning from Earth and founding the Plantar family lineage as Sprig reads her letter to Andrias. Also technically for Barrel, who was mentioned in the letter and appears once in the flashback laughing alongside Leif and Andrias.

Marcy is trapped in a Lotus-Eater Machine by the Core
After the Core possessed Marcy, it inherits her body, personality and quirks, but the real Marcy is locked away inside her own brain. An image of a future episode of the three girls dancing in the school hallway shows the Core turned her mind into the future world she deserved, where the girls are free to be together forever.

King Aldrich unwittingly inspired medieval dragons
Aldrich described Earth as a medieval world and told Andrias he would have to slay the savages there. Aldrich knows all this because he himself has been there to make sure the world was worth conquering. The humans of that era happened upon this gigantic lizardlike beast, but obscured certain details like exchanging the flame sword he was possibly welding for flame breath.

Leif's "blank" letter will cause Andrias to realise the Plantar connection.

Which will either lead to a Heel Realization, him going after the Plantars in a rage, or the latter followed by the former.

  • It's not explicitly stated, but Sprig does tell Andiras that the letter was found in their family basement, and all the context clues around it do add up. And hearing Sprig read aloud Leif's letter does indeed prompt a Heel Realization from Andrias.

Sprig's goggles will be a Chekhov's Gun
They will allow him to see the writing on Leif's note.
  • Jossed. It's Mr. X's spy glasses that let them read the letter.

Andrias was in love with Leif and his love will somehow redeem him.
In "The Core and The King", when Leif does her hypnotic dance, you see Andrias looking away and blushing. Perhaps Andrias was in love with Leif before her betrayal and still loves her now, but either hides it or is still too angry over her betrayal. It's already been suggested that the Planters are Leif's descendents. Pehaps this will be revelaed during the final battle, and the Planters will use Andrias' love for her to convince him she was right all along and what he is doing is wrong.
  • Confirmed! Hearing Leif's final letter to him causes Andrias to realize how far he's sunk and throw the fight.

Grime will die.
During the final battle, he might get killed in a Heroic Sacrifice to protect Sasha, which will awaken her calamity powers.
  • Threatened but thankfully avoided. Albeit at the cost of an arm. Sasha's calamity powers, however, weren't unlocked from the event.

Maggie will be Back for the Finale.
She will be among the people fighting back against the invasion. She will also apologize to Anne for the way she treated her (and personally wants to apologize to Marcy too). While knowing it's no excuse, she reveals that she was influenced by her racist parents.
  • The main guess is Confirmed, as she does appear and roots for Anne. But they don't meet up during the course of the episode.

The FBI will have a Big Damn Heroes moment early on in "All In".
"The Beginning of the End" finished with the protagonists in their Darkest Hour, all restrained by Darcy and Andrias's forces with Anne set to be dissected and the rest to be fitted with mind control collars. It seems highly unlikely they'd be able to break free on their own. But when we last saw Earth, Anne's parents were more than ready to fill Mr. X in on everything regarding Amphibia and King Andrias's impending invasion. In the time Anne and the Plantars have been back in Amphibia, the government may have been preparing for the possible worst case scenario that Andrias succeeds in reaching Earth with his forces and beginning his invasion. And given such a scenario would likely mean that Anne and the Plantars are in trouble, they may send out a task force to rescue them.
  • Jossed. Frobo breaks them all out instead, and they only meet up with the FBI after completing their escape.

"The Hardest Thing" is not what we think it'll be
The title seems to imply that it will be time for Anne to say good-bye to the Plantars for good as she returns home. However, in a Bait-and-Switch, it might be about all the creatures of Amphibia saying good-bye to their world. In a Prophecy Twist regarding the Colony Drop Leif saw, rather than being a warning of Amphibia's destruction, it actually meant that in order to erase everything the Core had wrought, Amphibia will need to be destroyed, and as a result, all the creatures of Amphibia will escape through the portal to live on Earth.

After the Core is defeated, the Calamity Trio will heal the damage Andrias did to Amphibia, causing all the greenery to regrow kind of like at the end of She-Ra.
There is a shot of Anne waking up in a grassy field from the season 3B promo which so far hasn't happened, meaning it must be from "The Hardest Thing".
  • Jossed. Amphibia eventually does get restored but it's not an instantaneous magical process. The shot of Anne waking up is a different scenario entirely.

Just as Leif drove Andrias to redemption, Barrel will be used to drive his sacrifice
Sacrifice has been a recurring theme surrounding Barrel. In "Barrel's Warhammer", it is mentioned that Barrel himself went down defending a village. In the same episode, Sasha loses two of her toad friends due to her ambitions to retrieve the warhammer. And Grime, the current owner of the warhammer, would end up losing his arm to save Sasha in "All In". This will all come to a head in the finale, where Andrias will find a memento of Barrel (an old picture, memorial statue, or he realizes who Grime's weapon used to belong to) and ultimately pulls a Heroic Sacrifice, making amends with both of his friends via Redemption Equals Death.

Olivia will become the new queen by the series end
With Yunnan by her side as her bodyguard and Grime defending the castle grounds.
  • Possibly Jossed by the Distant Finale, as Oliva and Yunan are shown settling down in Wartwood rather than ruling Amphibia.

Barrel was the Third Wheel of Andrias' friend group
Looking at the signs makes it a bit more clear why he's Out of Focus compared to Leif. Andrias and Leif made a way to communicate with each other through invisible ink, leaving Barrel in the dark until the former told him. Later he casually joins in the hug between Andrias and Leif after the two made up from a brief argument. When Andrias first meets Marcy, he says only one person ever called him "Drias", referring to Leif, although Barrel also called him that.

This makes him even more similar to Marcy, who could be seen as a third wheel between Anne and Sasha, whose interests differ from hers. She was also Out of Focus until Season 2.

Andrias will have a Heel–Face Turn

Anne, Sasha, and Marcy are protecting Andrias
if there power effects are any Indication, it's likely that they are protecting him from The Core.
  • Well, they're protecting all of Amphibia from the Core, not just Andrias.

The Core will finally be Killed Off for Real by The Calamity Powers
If there is any possibility of what might happen, it's likely that during the battle, The Core will end up being killed by the Calamity Powers.
  • Confirmed.

There will be a Sequel Hook on the Multiverse
Since we do not know what universes are part of the Multiverse, it's likely it will be set up as part of Disney animated shows.

Caecilians inhabitant the new continent
The continent Ivy and Sprig set out to explore at the end of the series, which is yet to be explored by frog, newt or toad, may just be home to a new race of amphibians that have been hiding out.

Marcy's web comic is a retelling of her adventures in Amphibia
Everything she and her friends experienced during their time in another world would of course make the perfect story.

Bonus if Sasha ever meets them as well and hangs out with them either in the time skip or by video call, being empathetic to their struggles.

     Potential future stories 
The Amphibia movie
Matt Braly has expressed interest in a movie based on the series and even brought up that it may involve Time Travel, with Leif and Barrel included. Other possibilities could include:
  • Anne, Sasha and Marcy finding a way back to Amphibia (most likely via a portal).
  • Sprig being the one to convince Leif to write that letter to Andrias.
  • More depth on Barrel's life after his exile.
  • Sprig and Ivy exploring the new continent.
  • Andrias pulling a Heroic Sacrifice, completing his redemption arc.

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