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The gang's (mostly) all here!note 
Jet, Sean, Sydney, Mindy, Sunspot, Carrot, Celery, and Face 9000, or the "Core Eight", are the main characters of the show.
  • Absentee Actor: Not all of them appear in every episode. The only characters that appear in every episode are Jet and Sunspot.
  • Alien Among Us: The Propulsion family, unbeknownst to their Earthie neighbors, are aliens.
  • Amusing Alien: The entire Propulsion family, who are very wacky and don't quite understand Earth.
  • Badass Crew: Certainly have been this at times, most notably in "Back to Bortron 7", where Jet, Sean, and Sydney save Carrot and Celery's presentation, Face 9000 and Sunspot rescue the PowerCube, and Mindy (along with Jet 2) somehow cause an eclipse that distracts the townspeople and Mitchell from seeing the Propulsion house land back on Earth.
  • Beauty, Brains and Brawn:
    • Sydney and Mindy are Beauty.
    • Sean, Face 9000, and Sunspot are Brains.
    • Carrot, Celery, and Jet are Brawn (Celery was even shown lifting the saucer up with one hand in "A Hammer and a Feather").
  • Cheerful Child: All four kids are cheerful most of the time.
  • Child Prodigy: For their age, the kids know a lot about science.
  • Color-Coded Characters:
    • Blue for Jet, Carrot, and Celery.
    • Grey for Sydney.
    • Green for Sean.
    • Orange for Mindy and Sunspot.
    • Face 9000 is represented by blue or violet.
  • Fish out of Water: Jet, Carrot, and Celery, who are Human Aliens that are trying to fit into Earthie society.
  • Five-Man Band:
  • Four-Temperament Ensemble: Jet (Sanguine), Sean (Melancholic), Sydney (Phlegmatic), and Mindy (Choleric).
  • Free-Range Children: The kids are always allowed to go wherever by themselves. They do have adult supervision in space, though.
  • Freudian Trio: Jet, Sean, and Sydney.
    • Sydney is the Id. Unlike Sean, Sydney wants to become a successful science fiction author and is more into science fiction and Greek mythology. She is also more emotional, kind, and loving than any of the group.
    • Sean is the Superego. Sean is studious and smart, and wants to grow up to be a great scientist and lead the first human mission to Mars. Sean is also concerned about his grades most of the time and uses the Scientific Method, as well as logical reasoning, to solve problems. Due to this, he has a terrible imagination.
    • Jet is the Ego. While Sean and Sydney are polar opposites, Jet is one of the sole reasons why they hang together and the arrival of Jet pretty much brought them together. Jet is talented at acting, singing, and dancing, and is curious about everything, especially Earth. Jet is also kind and generous, and always has a positive attitude and great leadership skills.
  • Human Aliens: Jet, Carrot, and Celery look like humans, but are actually aliens.
  • Intergenerational Friendship:
    • Jet, Sean, and Sydney (preteens) are all friends with Mindy (preschooler).
    • Carrot (adult) and Mindy (child) have a close bond.
  • Interspecies Friendship: The Propulsion family all have a very close bond with Sydney, Sean, and Mindy.
  • It Runs in the Family: It's implied that the craziness of the Propulsions might be a familial trait.
  • Odd Friendship:
    • Jet, an eccentric alien, has one with Sean (a neurotic science nerd), Sydney (a sci-fi geek and fanfic writer), and Mindy (a little girl).
    • You'd hardly expect Sean and Sydney to get along considering how different their interests are, but they do.
  • Only Child Syndrome: Jet, Sean, Sydney, and Mindy don't have siblings.
  • Quirky Household: The Propulsion family, who do many odd things. They also all have an unironic love of failure, cannot keep their alien identities secret, are perpetually enthusiastic, and, according to Word of God, wake up each day having forgotten previous events.
  • Ragtag Bunch of Misfits: A quirky, hyperactive alien kid and his parents, a strange alien pet who can do anything and everything, a computer with a face, a comic-book geek, an uptight science nerd, and a little girl. And yet somehow they all came together and have a strong, family-like bond, and when it's called for, they more often than not save the day. Yep, they definitely fit the bill. Whichever side character(s) joins them for their adventures can easily fit into the group as well.
  • Rubber-Forehead Aliens: The Propulsions would be just like actual humans if not for their stretchy bodies and space-suits.
  • Secret Keeper: Sean, Sydney, and Mindy all keep the secret that the Propulsions are aliens.
  • Shared Family Quirks: Jet, Carrot, and Celery all have a tendency to not keep their identities secret, and to misunderstand certain Earth expressions, sometimes taking them literally.
  • Shipper on Deck:
    • The kids love it when Carrot and Celery do something romantic. Not all the time though, as Jet and Sean were grossed out by their flirting in "Sounds Abound".
    • Jet, Sean, and Sydney seem to ship Mitchell/Mindy.
  • The Smart Guy: Celery, Face 9000, Sean, and sometimes Sunspot all share this role, due to all of them having a wide knowledge of science. Sunspot is often ahead of what anyone else is doing, thinking, or realizing.
  • Trademark Favorite Food:
    • The Propulsions all love the Classic 3-Part Bortronian Meal.
    • Sean loves pot roast.
    • Mindy likes chile rellenos.
    • Sydney likes ratatouille, which her mom makes.
  • True Companions: No matter what, all eight of them will forever stick by each other's sides and go to the ends of the universe to make sure they're okay.
  • Undying Loyalty: Sean, Sydney, and Mindy to the Propulsion family. They are devoted to keeping their secret and always stand by them.
  • The Unpronounceable: All three members of the Propulsion family have weird strings of sound effects for their Bortronian names.
  • Wise Beyond Their Years: The kids act more like young adults than actual children at times.

Bortronians

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    Jet Propulsion 

Jet Propulsion

https://static.tvtropes.org/pmwiki/pub/images/rjg_jet.jpeg
"If you try and you make a mess, who cares if it's not a success?"
Voiced by: Ashleigh Ball
The star of the show. Jet may be a typical kid for Bortron 7, but he’s extraordinary to the kids next door. Always curious and fearless, he leaps before he looks. Jet is unafraid of failure- an idea there's no word for on Bortron 7- and you can’t get him down. Like the Music Man, he might burst into a song he made up on the spot. He can build anything. Jet is endlessly delighted by our planet, which to him is huge and lush, incredibly varied and beautiful. He often points out the wonders of ordinary things to the Earth kids.


  • The Ace: He can stretch his body, is really tall, adorkable, smart, and the leader of his gang.
  • Adorably Precocious Child: It is unknown how old Jet is, but he is exceptionally intelligent for his age. It also helps that he is an alien and his parents are travel writers. It even gets lampshaded by Dr. Bergs in "Visit to Mom's Office".
  • Adorkable: Jet is an awkward, goofy kid who sometimes gives away his alien identity.
  • Aerith and Bob: Jet is an uncommon boys' name, but to be fair, his parents thought Jet was a regular Earth name.
  • Agent Mulder: In "Fact or Fiction?", where he, along with Mindy and Lillian, believes that clouds are made of cotton candy.
  • Aliens Speaking English: Jet can speak English well, but Mr. Peterson points out that he has a bit of an accent and thinks that Jet is from Iowa.
  • All-Loving Hero: Jet, being new to Earth, loves everything about it, and is nice to everyone, including Mitchell Peterson, who is sometimes rude to him and tries to find out if he's an alien.
  • All of the Other Reindeer: Sean's mom thinks this is why he describes himself as an alien, as she had the same issue when she was younger.
  • All Work vs. All Play: The All Play to Sean's All Work. Whenever the kids need to solve a problem, Sean wants to use the Scientific Method and work to get the problem solved, while Jet wants to play around and deliberately make mistakes in order to solve the problem.
  • Almost Kiss: In the TV movie "Back to Bortron 7", during the "Just Add Water" number, Jet and Sydney are almost about to either hold hands or kiss, but Celery obscures the shot
  • Ambiguously Bi: Jet's sexuality has yet to be confirmed, but Jet always shows signs of being attracted to both Sean (a male) and Sydney (a female). See Ship Tease and the Ho Yay subpage for more.
  • Ambiguous Disorder: Again, this is what Dr. Rafferty thinks when he reveals that he is an alien from Bortron 7, as "being from another planet/being an alien" is a common metaphorical description of what autism feels like.
  • Amusing Alien: Duh.
  • Anime Hair: Jet's hair is quite spiky. Seriously, it must take lots of hair gel for his hair to stay up like that. He seems to take great pride in his hair as well, as shown in episodes like "You Can Call Me Albedo", "Detective Mindy", and "Earth, Wind, and Flyer".
  • Are You Pondering What I'm Pondering?: Happens in a few episodes between Jet and one other person.
  • Author Avatar: Jet is based off of series creator Craig Bartlett.
    Craig Bartlett: Jet won’t shut up, you can’t get him down, he is always optimistic and he’s like the music man always bursting into song. When I was a kid, I thought wouldn’t it be fun if everything was a musical and people were always bursting into song. So I feel like he is the best iteration of my kind of personality that we’ve come up with yet.
  • "Awesome McCool" Name: Obviously. He was named after the Jet Propulsion Laboratory, and his parents though "Jet" was a regular Earth name and "Propulsion" was a common last name.
  • Bearer of Bad News: In "Project Pluto", Jet loses to Sean and Sydney in a game of "not it" and has to tell Mindy that Pluto is no longer a planet. However, he gets off easy because when he tries to tell her, she tells Jet that she already knew.
  • Big Eater: It seems that every few episodes, he develops a new food obsession. He even lists eating as one of his favorite things in "Treehouse Observatory".
  • The Big Guy: Jet is the tallest of the children, is very strong, and can sometimes slip into Badass Adorable territory.
  • Buffy Speak: Calls the humans "Earthies".
  • Cannot Keep a Secret: He's absolutely rubbish at keeping the secret that he's an alien. He also has trouble keeping other secrets too. In "Moon Circus", Jet was unable to keep the secret about the surprise party.
  • Catchphrase:
    • Excelsior! (onward and upward in Latin)
    • "What a funny/amazing Earth word!"
    • "Sunspot, car trip!"
  • Cheerful Child: Jet sees the good in everything, is a Friend to All Living Things, and is perpetually enthusiastic.
  • Child Prodigy: This is what it seems to people on Earth who don't know that Jet is an alien. Dr. Rafferty even compliments his knowledge of space in "Visit to Mom's Office".
  • Cloudcuckoolander: He is quite weird and silly.
  • Cool Big Bro: Even though they're not related, Mindy sees him as one due to just how amazing he is, especially his optimistic outlook on life and spontaneous nature.
  • Cuddle Bug: Implied, since he will randomly put his arm around Sean's shoulder at any given time. There's also a few instances where he puts his hand on the latter's back or chest.
  • The Cutie: Jet proves to be this trope entirely, with his adorkable tendencies and positive outlook on life.
  • Determinator: No matter what, he always stays optimistic and never gives up. He even has his own song about trying again.
  • Disco Dan: Jet seems to be fond of notably dated music.
  • Ditzy Genius: Jet is an absolute expert on everything space, but he absolutely, definitely, positively cannot keep his alien identity a secret when in public.
  • Does Not Like Spam: In "Mindy's Weather Report", Jet reveals that he hates ice cream. This is also a Running Gag on the show.
  • Fatal Flaw: Being a Leeroy Jenkins. He always leaps before he looks. He also insists on failing multiple times instead of getting things right the first time.
  • Fiery Redhead: Jet has auburn hair and is very energetic.
  • Forgetful Jones:
    • He, like the rest of the Propulsion family, always forgets not to tell people that he comes from Bortron 7.
    • Jet always needs to Sean to teach him the Scientific Method over and over.
    • In "Mars Rock For Mom", a Running Gag involved him forgetting where he put his objects. This comes to a head when Jet realizes that he left Jet 2 on Mars.
  • For Halloween, I Am Going as Myself: In the Halloween special, Jet dresses up as an alien. And gets away with telling people he is from Bortron 7.
  • Gag Nose: As shown in one episode, his nose honks when it is squeezed.
  • Genki Guy: Jet is energetic and upbeat, and really positive compared to the cowardly Sean and the condescending Mitchell, who are the only other male children.
  • Gosh Dang It to Heck!: In "Who Messed Up the Treehouse?", Jet says "It's those darn squirrels again!"
  • Has a Type: It's subtle, but he seems to have a thing for smart people, (seemingly) no matter if they're male or female. He had a Precocious Crush on Dr. Rafferty, an accomplished scientist at the local Deep Space Array, for a couple of episodes. He has frequent Ship Tease with Sydney, who is quite knowledgable when it comes to Earth things that Jet doesn't understand and knows a lot about science fiction and Greek mythology. He has Ho Yay with Sean, a Child Prodigy with an obsession for science facts. And strangely, he also seems to have a liking for Mitchell, a wise beyond his years Nerd, despite Mitchell's occasional rudeness towards him.
  • The Hero: Well, obviously.
  • Hidden Depths: Jet turns out to be a great mechanic and singer.
  • Hidden in Plain Sight: Jet blends into Earthie society by looking like a human.
  • Humans Through Alien Eyes: Jet and his family do not seem to get the Earthies' behaviors and vocabulary, often using them the wrong way.
  • Idiot Ball: Jet gets passed this in "Mindy's Weather Report". In that episode, Mindy tells the gang that a storm is on Saturn, and Jet believes that there's a storm in Boxwood Terrace, and tells all the neighbors (including the Petersons) to prepare, despite the number of times Sean, Sydney, and Mindy try to tell Jet that the storm in on Saturn. When the gang goes into space, they see the storm on Saturn and Jet says: "Why didn't you tell me?" with Sean and Sydney in annoyance.
  • Idiot Hero: Jet gives off this vibe at times due to him being incredibly naive about Earth, very forgetful, and often jumping into situations without thinking first.
  • Incorruptible Pure Pureness: While Jet is by no means perfect, he is still an optimistic, kind-hearted kid who sees the good in everyone, and wants to help in any way he can. He's even able to put up with Mitchell's constant spying on him, and (to an extent) Zerk's over-the-top antics.
  • Incredibly Lame Pun: In "Our Sun is a Star!", when Jet lifts his sunglasses up and down so it appears that Mitchell is turning orange and then back to his normal color, he says this: "Orange you glad you're not permanently orange?".
  • Inherently Funny Words: A lot of Earth words, for him, such as "falafel".
  • Innocent Aliens: Is very kind-hearted.
  • I've Heard of That — What Is It?: In "Every Day is Earth Day", Jet says that he loves Earth Day, but then asks what it is.
  • Jet Pack: He has a jet pack, which he uses in episodes such as "My Fair Jet" and "Mindy's Moon Bounce House".
  • Keet: Like you wouldn't believe. He is perpetually optimistic, always speaks loudly, gets excited over the littlest things, and loves everyone.
  • Large and in Charge: Jet is the leader of his group and is tall.
  • Large Ham: The song number in "A Visit to the Planetarium" proves that Jet is this.
  • Last-Name Basis: Mr. Peterson calls him by his last name.
  • Laughing Mad: In "Detective Mindy", Jet looks for a black hole in the trash can. He puts it over his head and starts laughing like a madman.
  • The Leader: Jet is the leader of his group, and is the headstrong type. He's an optimistic Determinator, but his tendencies to leap before looking tend to land him and his friends in hot water on occasion.
  • Leeroy Jenkins: His Fatal Flaw is that he acts before thinking. This impulsive behavior has caused trouble for him on many occasions.
  • Like Parent, Like Child: As Celery points out in "Moon Circus", Jet and Carrot are very similar. Namely, they're both bad at keeping secrets, and they both love prune juice with lemons.
  • Limited Wardrobe: Almost never wears anything else besides his regular spacesuit outfit. However, he does wear a white shirt under his jacket.
  • Meaningful Name: Jet is named after the Jet Propulsion Laboratory, who helps out with this show.
  • Mondegreen: Jet mishears "habitable" as "habit-a-bubble" in "Moon Circus".
  • Mr. Fixit: Jet is pretty handy with tools, as he was able to fix the satellite in "What's a Satellite?". He even built an entire saucer in "One Small Step".
  • Mundane Object Amazement: Jet is constantly fascinated by the most simple of Earth objects, such as drinking fountains (as shown in "Visit to Mom's Office"), much to the confusion of the other children.
  • Nice Guy: He doesn't have a bad bone in his body. (If he even does, since he's so stretchy).
  • Nice Job Breaking It, Hero!: In "Moon Circus", Jet gets a moment of this when he blabs out loud that the kids planning a surprise party for Carrot, unaware that Carrot is listening.
  • Obsessed with Food: Jet loves food and is a major Big Eater. He always seems to have food on his mind. He even considered wishing for every marshmallow in the world in "Bortron Leprechaun".
  • Odd Name Out: He and Zerk are the only members of their family that don't have vegetable names.
  • Older Than They Look: While he's implied to be of equivalent age to his human peers, Jet is several decades older than them going by his home planet's years.
  • The Pollyanna: You can't get him down, and he always finds a solution for the problems the kids face. Even in the most dire situations, he keeps a smile on his face.
  • Precocious Crush:
    • It's really easy to think that Jet has a crush on Sean's mom as of "Visit to Mom's Office". When he first sees her, he immediately gives her a big hug (Sean's mom looks surprised, Sean looks annoyed, and Sydney looks sad, since she has frequent ship tease with Jet and possibly likes him), and even calls her "Dr. Sean's Mom" even though he knows that their last name is Rafferty. He is later seen smiling widely at her and raising his eyebrows trying to catch her attention, which also made Sydney upset. To top it off, he seemed all too excited to tell her that he is from Bortron 7. This crush can also be seen in other episodes. In "Ice Moon Enceladus", when Dr. Rafferty is passing by Sean's snow cone stand, Jet immediately greets her, even though she ignores him, and in "Mindy's Meteorite Stand", when Dr. Rafferty was inspecting Mindy's "meteorite", Jet also looked through a magnifying glass to impress her.
    • In the episode "Asteroid Patrol", Sean's telescope needs adjusting and Jet happily offers to go to Sean's house to get some items. Of course, when he sees Sean's mom, he acts awkward around her.
    • In "Face on the Fritz", Jet plays with Dr. Rafferty's phone and then gives it back to her in embarrassment.
    • However, this crush eventually disappeared and is never brought up again.
  • Really 700 Years Old: Well, more like "Really Several Decades Old" but Jet is 63 (Bortronian) years old; much older than his human friends.
  • Red Oni: Jet is the Red Oni to Sean's Blue Oni. Jet is extroverted, optimistic, and always leaps before he looks. This has caused trouble for him from time to time.
  • Rule of Symbolism: Jet is the coolest kid ever, and an ambassador for space. Jet embodies what the other children represent. Jet is creative, and being from outer space, and having travel-doc parents, he knows a whole lot about it, and he's very curious to learn about Earth and its customs. Jet also represents how the creators of this show want the target audience to see Earth: with a sense of curiosity and wonder. Jet is continuously amazed by our lush and beautiful planet, and as such, wants to protect it, since it is his current residence. The episode "Tiny Blue Dot" proves this.
  • Running Gag:
    • Jet proclaiming ordinary words to be funny or amazing.
    • Also, Jet being awkward and goofy all the time, and often trying not to expose his identity.
  • Secret Identity: The Propulsions are secretly aliens from the planet Bortron 7, and are trying to keep a low profile on Earth or else they could become celebrities, and Jet would never get to play with his friends again (as pointed out in "Visit to Mom's Office"). Their alien identities are only known to Sydney, Sean, and Mindy.
  • Shipper on Deck: Jet seems to be a Mitchell/Mindy shipper, as evidenced when he purposefully brought the two of them to the treehouse in the Halloween special, and cheered wildly when Mitchell and Mindy "got together" at the end of "Detective Mindy".
  • Ship Tease: With both Sydney and Sean, most of the time, though Jet also liked Sean's mom for a couple of episodes. See this trope on the main page for more information.
  • Stage Magician: In "Who Messed Up the Treehouse?", Jet tries to be a magician to make the trash disappear, with failed results.
  • Strong Family Resemblance: Jet strongly resembles both of his parents, due to his spiky, side-swept red hair and blue space-suit. Taking this trope Up to Eleven, Carrot and Celery are Lookalike Lovers.
  • Talking to Plants: In "That's One Gigantic Pumpkin, Jet Propulsion!", he tries to sing to his pumpkin to make it grow.
  • Tearful Smile: In "Jet Cooks Dinner", the Propulsions begin to miss Bortron 7 and the Classic 3-part Bortronian Meal. After they sing the commercial tune, Jet gets nostalgic about Bortron 7 and starts to cry a little bit, while smiling.
  • Trademark Favorite Food: The Propulsions love the Classic 3-Part Bortronian Meal, which consists of a Hoagie, a Figinnuz, and an Exploding Shake. But Jet seems to like it the most. Pie also seems to be pretty popular with him.
  • Two of Your Earth Minutes: Tends to speak in this manner.
  • Unknown Rival: Jet, for the most part, is unaware of Mitchell spying on him. The only kid who knows about it is Mindy.
  • Vague Age: He's 63 years old in Bortronian years, but it is unclear how old he is in Earth years. The only clue we have was given in "Treasure Map", where Mitchell says Jet isn't twelve yet.
  • Wide-Eyed Idealist: One of the defining examples of the trope. Jet is perpetually optimistic and doesn't mind when he makes mistakes, because if you don't fail, you don't learn. He also sees the good in everyone (even Mitchell) and doesn't see how anything can't work out. And, unlike most examples of the trope, Jet's optimism ends up prevailing.
  • Wingding Eyes: Jet gets stars in his eyes towards the end of "Lone Star 2 - Rocket Kids!".
  • Wink "Ding!": Almost every time Jet winks, a "ding!" sound can be heard.
  • Wise Beyond Their Years: As noted by many characters, he is very smart for a kid his age.
  • What the Hell, Hero?: The kids are always this to Jet whenever he does something dumb.
  • Zany Scheme: Jet is full of them.

    Carrot and Celery Propulsion 

Carrot Propulsion and Celery Propulsion

https://static.tvtropes.org/pmwiki/pub/images/screen_shot_2017_12_01_at_110525_pm.png
Celery (left) and Carrot (right)
Voiced by: Kyle Rideout (Carrot), Meg Roe (Celery)
Mr. and Mrs. Propulsion (who go by “typical Earth names” Carrot and Celery) work as intergalactic travel writers, and are here on Earth for a long stay, from which they intend to file many travel stories. Like Jet and all Bortronians, they’re cheerful and fearless. As Bortronian travel writers, they follow the Prime Directive: “don’t freak out the locals.” They also tell Jet to “leave your campsite cleaner than when you found it.” However well-intentioned, though, they tend to forget to keep their alien identity a secret and keep telling people that they are from Bortron 7. Carrot and Celery tend to talk in a rather eccentric English, since they just downloaded it when they arrived on Earth. They mix up their metaphors and are always freshly learning Earth habits like shopping for food, taking care of the house, and “mowing the roof.”

It is important to note that they are one of the most positive depictions of parents you'll ever see in animation. They are loving, yet flawed, and they aren't brainless, deceased, or abusive/neglectful.


  • Absentee Actor:
    • Celery was absent in "Backyard Moon Base", "Mindy's Moon Bounce House", "Visit to Mom's Office", "A Visit to the Planetarium", "What Goes Up...", "Asteroid Patrol", "Treehouse Space Station", "Earth Camping", "Satellite Selfie", "Scientific Sean", "Beep and Boop's Game", "Constellation Prize", "Total Eclipse of the Sunspot", "Sean's Year in Space", "Lone Star", and "Jet's Time Machine"
    • Carrot was absent in "Mindy's Moon Bounce House", "Beep Has the Blues", "Visit to Mom's Office", "Mission to Mars", "A Visit to the Planetarium", "Ice Moon Enceladus", "What Goes Up...", "Asteroid Patrol", "Face on the Fritz", "Sunspot and the Great Red Spot", "Detective Mindy", "Satellite Selfie", "Beep and Boop's Game", "Total Eclipse of the Sunspot", "Sean's Year in Space", "Whole Lotta Shakin'", "The Mindysphere", "Lone Star", "Space Race", "Sean's Neptune Tune", and "Not a Sound".
  • Accidental Pun: Carrot and Celery think their names are Earth names, but they were likely going for Garrett and Sally, respectively.
  • Ace Pilot: Celery. She is great at piloting the flying saucer, avoiding asteroids and other threats with ease. In fact, Carrot mentions in "How Come the Moon Changes Shape?" that Celery has been voted the best driver (well, technically pilot, but the Bortronians tend to treat saucers like cars) in the Bortron system for three years in a row.
  • Action Mom: Celery. Besides being an Ace Pilot, she has super strength as revealed in "A Hammer and a Feather", and is generally the most action-y of the Propulsion family.
  • Adorkable: Carrot is this to the extreme. Especially in "Castaway Carrot".
  • Alien Lunch: Carrot creates many odd dishes, such as deep fried lollipops.
  • Aliens Speaking English: They can speak English, albeit eccentrically.
  • All Work vs. All Play: Carrot is the All Play to Mr. Peterson's All Work, as shown in "Earth Camping".
  • Amusing Alien: They provide a lot of comedy in the show.
  • "Awesome McCool" Name: The names of "Carrot" and "Celery" certainly are cool in their own right.
  • Birthday Episode: Carrot has his 250th birthday in "Moon Circus".
  • Brief Accent Imitation:
    • In "Castaway Carrot", while Carrot is stranded on the moon, he decides to go in his "talk-with-an-accent" crater, and briefly talks with a British accent.
    Carrot: 'Ello, guv'nor. Fancy a spot of tea or bangers and mash?
    • In "Bortron Leprechaun", Carrot briefly puts on an Irish accent.
  • Buffy Speak: They call the humans "Earthies".
  • Bumbling Dad: Carrot is this due to being very silly and often clueless compared to his wife. However, he provides helpful information to the kids and is a great baker, making him a downplayed example of the trope.
  • Camp Straight: Carrot. He does feminine activities such as cooking and ballet (as revealed in "Castaway Carrot"), wore a pink scarf in the aforementioned episode, and yet he is married to Celery.
  • Cannot Keep a Secret: Just like their son, they often forget to keep the secret that they're aliens. They also didn't keep the secret about the surprise party in "Earthday Birthday". In "Moon Circus", Carrot overhears that the kids are planning a surprise birthday party for him, he has to keep the secret that he knows about it, but struggles. Celery explains that this is a shared trait between Carrot and Jet.
  • Catchphrase:
    Carrot: You are absolutely the amazing.
    Celery: Right back in your general direction, hon!
    • Celery - "5, 4, 3, 2, 1, doors are shut, engines on, everybody in their place, let's go into outer SPAAAACE!"
  • Cloud Cuckoo Lander: Both of them exhibit very strange behavior.
  • Cordon Bleugh Chef: While Carrot is genuinely a Supreme Chef, he tends to make dishes that are weird and/or disgusting to humans, but pleasant to Bortronians. Deep-fried lollipops and broccoli ice cream sandwiches, for example. In fact, in "Fact Or Fiction?", he somehow makes cookie dough come to life.
  • Distressed Dude: In "Castaway Carrot", Carrot gets stranded on the moon, but gets rescued by his family.
  • The Ditz: Carrot qualifies for this trope, as he is rather silly. Celery could apply too, as both of them are Literal-Minded. However, they are lovable nonetheless.
  • Ditzy Genius: They are extremely smart, due to being intergalactic travel writers. But they keep forgetting not to tell people that they come from Bortron 7.
  • Edible Theme Naming: Like the other members of the Propulsion family (except for Jet and Zerk), they are named after vegetables.
  • Expy: Celery is an expy of Ms. Frizzle from The Magic School Bus. Both of them are eccentric red-haired ladies who drive vehicles that take kids on weird science adventures.
  • Fainting: Carrot faints into Celery's arms when Jet mentions him in his song in "My Fair Jet".
  • Fatal Flaw: For Carrot, it's him being clueless. For Celery, it's her being Innocently Insensitive.
  • Fish out of Water: They are trying their best to fit into Earthie society.
  • Forgetful Jones: They always forget to not tell people that they come from Bortron 7.
    • In "Earthday Birthday", they tell Jet that a surprise party is being held. Fortunately, they don't tell him that it was for him specifically.
  • Friendly Enemy: Mr. Peterson is this to Carrot.
  • Friendly Rivalry: Celery has one with Zucchini. They just love racing each other.
  • Genki Guy and Girl: Like all Bortronians, they are very energetic.
  • Go Mad from the Isolation: Carrot undergoes a major Sanity Slippage in "Castaway Carrot" while stranded on the moon. He gets a twitchy eyelid at one point, attempted to farm pizza on the moon, and drew pictures of his family on rocks, and made out with the Celery rock.
  • Good, Open Minded Parents: As noted above, they are one of the only positive depictions of parents in animation. Carrot and Celery are very kind, tolerant, and encourage the children in their science exploration, and are always happy to take them into space.
  • Happily Married: And how! They are constantly flirting with each other, and have a couple of love songs dedicated to them.
  • Hidden Depths: Carrot turns out to be a great chef. "Castaway Carrot" reveals several hidden traits, such as that he is a great ballet dancer, and he can hold his own while stranded on the moon.
  • Hidden in Plain Sight: The Propulsions coincidentally look like humans, which allows them to hide in plain sight on Earth easily without anyone discovering their secret alien identity.
  • Holding Hands: They do this in "Back to Bortron 7" while entering the Intergalactic Travel Writers' Headquarters.
  • House Husband: While Celery is always taking the kids to space, Carrot stays home and does things like cooking.
  • Humans Through Alien Eyes:
    • Jet and his family do not seem to get the Earthlings' behaviors and vocabulary, often using them the wrong way. Once, Carrot was shown mowing the roof.
    • In the Halloween 2-parter, Carrot and Celery thought that Valentine's Day decorations were acceptable Halloween decorations.
  • Innocently Insensitive: Celery. She comes off as this due to the fact that she always ignores Sean's protests and always drags him into whatever space mission that the gang has to go on. This isn't out of pure malice - this is only out of the fact that Celery simply wants Sean to have fun and to learn new things. After all, going into space to learn new things is way more fun and more interesting than simply looking it up online. An example of this behavior would be in "My Three Suns", where she doesn't let Sean go to the bathroom.
  • In Touch with His Feminine Side: Carrot is a stay at home dad, and he likes to cook. He is also revealed to like ballet in "Castaway Carrot", and he briefly wore a pink scarf while admiring himself in a mirror in the same episode.
  • Jaw Drop: Carrot does one in "Back to Bortron 7" after Eggplant informs him and Celery that they'll be done with Earth after their presentation. For dramatic effect, the Exploding Shake that Carrot was holding explodes in his face.
  • Large Ham: Celery, if the Takeoff song number is any indication.
  • Like Parent, Like Child: Celery says this trope's name out loud when comparing Carrot and Jet's shared tendencies to not keep secrets in "Moon Circus". She also offhandedly mentions that they both like prune juice with lemons.
  • Literal-Minded: Jet's parents' learning curve is filled with funny misunderstandings of the human ways of things, and both kids and parents will have a lot of fun watching them get the hang of "throwing a salad together" and understanding the "string" part of beans. Their Amelia Bedelia-like follies are good for some laughs, but they also reflect the challenges of immersing yourself in a culture that's different from your own.
  • Lookalike Lovers: They look exactly the same. Are we sure they're not siblings?
  • Malaproper: In "Every Day Is Earth Day", Carrot mistakes "toaster" for "poster" and presents a toaster at the DSA celebration, much to Mr. Peterson's annoyance.
  • The Mentor: Celery is this. She is very smart and often teaches the kids things about space when she takes them there.
  • Nice Guy: They are perpetually cheerful and friendly.
  • Nice Job Breaking It, Hero!: In "Moon Circus", Carrot gets a moment of this when he says out loud that they're planning a surprise party for him.
  • Parents as People: While Carrot and Celery are intelligent and loving parents, they also have flaws that help humanize them (no pun intended), and have actual personalities outside of just being the parents of Jet. For instance, Carrot can be rather bumbling at times. This eventually comes to a head in "Mindy and Carrot Bake", where Carrot's cluelessness inadvertently gets them stranded in space. Celery tends to be Innocently Insensitive, as it often seems like she doesn't care about Sean due to ignoring his protests of going to space. She does care about him, and just wants him to a have fun time learning.
  • The Pollyanna: You can count the number of times they don't smile in an episode with just one hand.
  • Real Men Wear Pink: Carrot. He wore a pink scarf in "Castaway Carrot", and he likes a lot of things that are considered feminine.
  • Sanity Slippage: Played for Laughs in Castaway Carrot. Carrot goes insane while stranded on the moon. He attempts to farm pizza on the moon, and gets lonely so he draws pictures of Jet, Celery, and Sunspot on some moon rocks. He even briefly makes out with the Celery rock!
  • Secret Secret-Keeper: In "Moon Circus", Carrot overhears from the kitchen that Jet is planning a surprise party for him. Carrot then has to keep the secret that he knows about the surprise party, but ends up telling Jet anyway.
  • Sickeningly Sweethearts: To the Nth degree. They flirt so much that it makes the other characters very uncomfortable.
  • Sibling Yin-Yang: Celery contrasts with her brother, Zucchini. Celery is a very good driver and is also quite smart, having a job as a travel writer. Zucchini, on the other hand, has a job as a garbageman and is quite dumb from time to time.
  • Smite Me, O Mighty Smiter!: In "Jet Can't Sleep", the Propulsion family is playing charades. In one round, Celery pretends to be sleeping. Carrot guesses a coffee table, but then Sunspot correctly guesses that Celery is sleeping. Carrot then remarks that he was gonna say that. Carrot says: "If I wasn't, may lighting strike me!" Then lightning flashes in the sky, and Carrot jumps into Jet's arm. Carrot then remarks that tonight isn't a good night to say that.
  • Snake Charmer: Carrot in "Sunspot's Sunspot", where he plays some typical snake charming music and makes Sunspot's tongue wiggle like a snake.
  • Super Senses: In "Just the Right Distance From the Sun", Celery reveals that Bortronians have super hearing. While this isn't mentioned again in any other episodes, it does explain why she conveniently drives the minivan up whenever the kids mention going to space.
  • Super Strength: Celery possesses this as shown in "A Hammer and a Feather", where she lifts the saucer up with one hand.
  • Supreme Chef: Carrot is an example of one. At least by Bortronian standards anyway.
  • Talking to Plants: Carrot sings to plants to make them grow, as shown in "That's One Gigantic Pumpkin, Jet Propulsion!".
  • Team Chef: Carrot. He's always cooking something.
  • Trademark Favorite Food: The Propulsions love the Classic 3-Part Bortronian Meal, which consists of a Hoagie, a Figinnuz, and an Exploding Shake.
  • True Blue Femininity: Celery.
  • Two of Your Earth Minutes: They tend to talk in this manner.
  • Women Are Wiser: Celery is much smarter/wiser than Carrot. It's even lampshaded a few times in the show.

    Sunspot 

Sunspot

https://static.tvtropes.org/pmwiki/pub/images/sunspot_rjg.png
Sunspot is a Bortronian pet, a kind of cross between a dog, cat, rabbit and raccoon. While he doesn’t talk, he likes to imitate the sounds of various other animals. He also makes sound effects, so he’s like Gerald McBoing-Boing. He’s a pantomime like Harpo Marx, with Snoopy’s rich inner life and R2-D2’s independence. He’s usually way ahead of what the kids are doing, thinking, or realizing. He is good at everything. Sunspot usually plays the instruments in Jet's songs.
  • The Ace: Sunspot can do anything. He can pull things out of hammerspace, plays several instruments, and is incredibly smart.
  • A Day in the Limelight: Sunspot is the focus of "Sunspot and the Great Red Spot", "Sunspot's Night Out", "Sunspot's Sunspot", and "Ain't No Mars Mountain High Enough".note 
  • Alien Among Us: He is an alien pet that is living on Earth with the Propulsion family, but people often question what animal he is.
  • Alien Animals: Sunspot is a Bortronian animal who is a kind of a mix of a rabbit, kangaroo, and raccoon.
  • All Animals Are Dogs: Lampshaded within the show. Sunspot sometimes behaves like a dog, and people often confuse him for one.
  • Amusing Alien: Much like his owners. Sunspot provides a lot of comedy for the series.
  • Ate It All: Sunspot eats all of Sean's peanut butter sandwiches in "Sean's Year in Space", and the entire pizza in "Satellite Selfie".
  • Balloonacy: As shown in "Every Day Is Earth Day", Sunspot is able to puff up like a balloon, and Jet flies away while holding on to him.
  • Big Eater: Sunspot can be like this sometimes. Sunspot eats all of Sean's peanut butter sandwiches in one episode, and scarfed down an entire pizza pie in another. He even ate an entire sub sandwich in "Mindy in Space".
  • Bizarre Alien Locomotion: Sunspot moves underwater by whirling his striped tail like a propeller.
  • Black Bead Eyes: He has these kind of eyes.
  • Brain Freeze: He gets one in the beginning of "Mindy's Ice Rink".
  • Cloudcuckoolander: Is usually pretty wacky and does many off-the-wall things that no normal pet could do, something Mitchell points out. Sunspot even acts weirder than usual in "Sunspot's Sunspot".
  • Cool Pet: He can play several instruments, pull objects out of Hammer Space, and has several other hidden talents.
  • Crazy-Prepared: A Running Gag in "One Small Step" involves Sunspot conveniently packing a lot of items the kids need and pulling them out whenever they needed. He packed food, Mindy's teddy bear, a moon rover, a parachute, and more.
  • Expy: A brochure describes him as being a mix of Snoopy, R2-D2, Harpo Marx, and Gerald McBoingBoing.
  • Face Palm: Sunspot does this several times, whenever Jet does something really dumb.
  • Hammer Space: Sunspot pulls objects out of thin air multiple times. For example, in "Detective Mindy", Sunspot pulls several sunglasses out of nowhere.
  • Hidden Depths: Sunspot is revealed to have many talents. He can pull objects out of Hammer Space, and can play several instruments, including concertina and pan-pipes.
  • Hidden in Plain Sight: Averted with Sunspot, as Earthies often question what type of animal he is.
  • Hyper-Competent Sidekick: Of sorts to Jet. He is clearly smarter and more competent than his owner, usually being way ahead of what he is thinking or realizing.
  • I Work Alone: Sunspot had this mentality in "Ain't No Mars Mountain High Enough", where he doesn't want help from any of the other characters in climbing Mt. Sharp. He later learns his lesson though.
  • Jerkass Ball: Grabbed firmly by Sunspot in "Ain't No Mars Mountain High Enough". He wants to hike alone and refuses to team up with Celery. He is later humbled when the gang saves him from flying off.
  • Literal-Minded: In "Space Junk", Sean asks someone to pinch him, and Sunspot does so, even though Sean didn't mean that literally.
  • Meaningful Name: Sunspot gets his name from the sunspots on the sun. Plus, the spot on his tummy kinda resembles a sun.
  • Mix-and-Match Critters: He is described as being a mix of a dog, cat, rabbit, and raccoon. This can be seen in his appearance as well, where he has the figure of a kangaroo, the tail of a raccoon, and the ears of a rabbit. He also possesses the behaviors of both dogs and cats.
  • Not-So-Innocent Whistle: In "Detective Mindy", Mr. Peterson finds his wife's sunglasses, only for them to be broken. He almost goes to the mall to get another pair to replace them (even though he doesn't like shopping), but Sunspot gives Celery's sunglasses to Mr. Peterson instead. Seconds later, Celery asks if anyone has seen her sunglasses, and Sunspot starts whistling.
  • O.O.C. Is Serious Business: In "Sunspot's Sunspot", while the kids are concerned about Sunspot's weird behavior, what really shocks them is when Sunspot refuses to eat a hoagie.
  • Orange/Blue Contrast: His orange fur contrasts with Moonbeam's blue fur.
  • Out of Character: In "Sunspot's Sunspot", Sunspot doesn't act like his usual self throughout the episode. This is justified though, as Sunspot acts strange whenever there's a huge sunspot on the sun.
  • Overly Long Tongue: "Sunspot's Sunspot" shows that Sunspot's tongue is very long.
  • Pass the Popcorn: In "Sean's Year in Space", Sunspot briefly eats popcorn while seeing how long Sean can last in the treehouse.
  • Playing Sick: In "Mindy Pet-sits", Sunspot fakes an injury so he gets to stay with Mindy.
  • Power Glows: Due to the sun's effects on him, Sunspot's tummy glows throughout "Sunspot's Sunspot".
  • Reflective Eyes: He gets these eyes when he sees the sun in "Sunspot's Sunspot".
  • Ridiculously Cute Critter: Come on, just look at him.
  • Running Gag: Sunspot being one step ahead of the kids, playing the instruments in Jet's songs, and making various sound effects.
  • Ship Tease: He has this with Moonbeam sometimes. For example, in "Back to Bortron 7", he winked at her and she fainted.
  • Sick Episode: In "Sunspot's Sunspot", Sunspot's weird behavior concerning the sunspot is treated as an illness.
  • The Silent Bob: He uses sound effects and body language to communicate, rather than words.
  • Silent Snarker: May not speak, but he can be a snarker at times, as indicated by the many scenes where he face-palms. Let's face it - if you were stuck with someone as ditzy as Jet, you would probably be like this too.
  • The Smart Guy: Sunspot is incredibly smart, often figuring things out that the kids can't.
  • The Speechless: Sunspot does not talk, instead he uses various sound effects to communicate. He actually ends up speaking in "Sunspot's Sunspot", when under the influence of the sunspots on the sun. He says "No, thank you" and "I am lovable, aren't I?".
  • Sting: In the episode "Diggin' Earth", Sunspot does it by drumming the air (aliens!) then hitting a shot blade as a cymbal. A response to Dr. Rafferty's "groundbreaking project" quip.
  • Suddenly Voiced: Sunspot had never said anything before, but in "Sunspot's Sunspot", he says "No, thank you" and "I am lovable, aren't I?".
  • Team Pet: Sunspot serves this role in the team due to being the only animal, and he could be seen as a mascot for the group.
     Face 9000 

Face 9000

https://static.tvtropes.org/pmwiki/pub/images/face9000new.png
https://static.tvtropes.org/pmwiki/pub/images/face9000old_4.png
Face 9000's look until "Face on the Fritz"
Voiced by: Brian Drummond
Face 9000 is a computer. He often pops up to answer the kids' science questions.
  • A Day in the Limelight: "Face on the Fritz" is one for him.
  • Adorkable: Face can be this at times, like when he is tickled in "Satellite Selfie".
  • Attention Whore: Face can be like this at times, especially in "Back to Bortron 7", where he was jealous of the PowerCube's attention.
  • The Cameo: There are some episodes where he appears, but his face doesn't appear and he doesn't speak. "One Small Step", for instance.
  • Cannot Tell a Joke: In "My Three Suns", Face 9000 tries to take up comedy, but fails due to not being funny.
  • Catchphrase: "Face 9000, ready to assist you!"
  • Encyclopaedic Knowledge: Due to being a computer, he has extensive knowledge on whatever science topic that the kids want to learn about.
  • Exactly What It Says on the Tin: Face is a face.
  • Fatal Flaw: His tendency to get jealous easily and his occasional It's All About Me tendencies. See below for more information.
  • Friendly Tickle Torture: Face is revealed to be ticklish in the episode "Satellite Selfie", where Sydney and Jet tickle him even though he is a computer. Face then says "Oh, forget logic!"
  • Green-Eyed Monster:
    • In "Back to Bortron 7", Face is bitter over the fact that the Propulsions are using the Powercube for their presentation and not him. He claims that Powercubes are "overrated".
    • In "Moon Face", Face 9000 gets jealous when he thinks that the kids like the moon "face" better than him. They reassure him that he'll always be their number one face.
    • In "My Three Suns", Face was jealous that the kids found Sunspot to be funnier than him.
  • Incredibly Lame Pun: Makes one in "Mindy's Meteorite Stand":
    "And Sean's right: the proper tests will help you discover if your rock is meteorite or meteor-wrong!"
    • And in "Eye in the Sky":
    "I didn't know weather or not you needed my help!"
  • Insistent Terminology: In "My Three Suns", Face 9000 demands that the kids call him "Funny Face".
  • It's All About Me:
    • In the episode "Satellite Selfie", he says "I guess you're just not me" when one of the characters asks why they didn't think of a good idea.
    • As noted in Green-Eyed Monster above, he tends to get jealous easily and wants all the attention that the kids are giving to something else. Like the PowerCube in "Back to Bortron 7".
  • "Knock Knock" Joke: Tries to tell one in "My Three Suns", but fails.
  • Meaningful Name: Face is a face. He has a 9000 in his name because he is a computer.
  • The Mentor: Face knows everything about science, and often pops up to answer the kids' science questions.
  • Midseason Upgrade: In the second half of episode 20 of season 1, "Face on the Fritz", Face gets an upgrade and a more 3D design.
  • The Noseless: He doesn't have a nose.
  • Orange/Blue Contrast: His blue color contrasts with his brother's orange color.
  • Out of Focus: Unfortunately so in season 2. He doesn't pop up as often to answer the kids' science questions. Now, the characters will usually consult "The Big Book of X", a DSA scientist, or figure it out themselves.
  • Robot Buddy: A computer that is good friends with the kids.
  • Running Gag: Him trying to be funny in "My Three Suns".
  • Sibling Rivalry: Has one with his brother, Face 9001.
  • Sibling Yin-Yang: With his brother, Face 9001. Face 9000 can be an Attention Whore at times, but he is otherwise a really friendly and helpful computer. Face 9001 is an Attention Whore all the time, loves showing off, and is a jerk to his brother.
  • Shout-Out:
  • The Smart Guy: Knows a lot about science, and is arguably the smartest character on the show.
  • Trickster Mentor: In "Chore Day", he keeps popping up whenever the kids are doing their chores to tell them that they are using force, and then keeps disappearing before he can explain what force is. At the end of the episode, the kids confront him about this, and he admits that he kept popping up because he was procrastinating on doing his own chore - cleaning out his memory chip.
  • The Unfavorite: Face 9001 tries to convince him that he is this in "A Kid's Guide to Mars", by saying that their mother always said that "Your brother knows everything".
  • Wingding Eyes: Face gets heart eyes in "How Come the Moon Changes Shape?" at the thought of pizza.
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Earthlings

    Sean Rafferty 

Sean Rafferty

https://static.tvtropes.org/pmwiki/pub/images/rjg_sean.jpg
Voiced by: William Ainscough (season 1, season 2 until "Our Sun Is A Star!"), Grady Ainscough ("You Can Call Me Albedo" to "Moon Face"), Glen Gordon ("Lone Star 2 - Rocket Kids!"-present)
Sean, the son of scientists and astronauts, figures he’s going to grow up to be a great scientist himself and plans to lead the first mission to Mars. But he's afraid of heights, fears cramped spaces, and easily gets space-sick - things he's trying to overcome before he grows up and becomes an actual astronaut. Sean’s the practical one, always insisting on doing things the old-fashioned way – even though he’s now suddenly hanging out in a very sci-fi reality with Jet! Sean’s a big fan of following the rules of the Scientific Method, which he sings about in his own song.
  • Absentee Actor: Sean was absent in "Earth Camping", "Sunday Drive", "Castaway Carrot", "Mindy and Carrot Bake", and "Treasure Map".
  • Acrofatic: Despite Sean's weight, he was able to do a flawless somersault over Jet's aunt in "Back to Bortron 7".
  • Adorably Precocious Child: Sean counts as this, along with almost every other child character in the show.
  • Adorkable: Sean is this trope in spades.
  • Affectionate Nickname:
    • As of season 2, Jet lovingly calls him "Sean-zo". He doesn't seem to mind it, except when Mindy calls him that in "Mindy's Bedtime". Hmm...
    • As of "Magnet, PI" he seems to have embraced the nickname as his own, as his magician name is "The Great Seanzo". He also calls himself "Sean-zo" in "Every Day Is Earth Day".
  • Agent Scully: In "Fact Or Fiction?", where he, along with Sydney, doesn't believe that clouds are made of cotton candy (and he's right).
  • The Aloner: In "Sean's Year in Space", Sean tries to live in the treehouse for a year all by himself, but eventually comes down for dinner.
  • Ambiguous Disorder: Sean could possibly have a high anxiety disorder due to being afraid of going to space and paranoid whenever someone touches his birthday telescope. More evidence to support this is in the episode "Jet Cooks Dinner", where he breathes into a brown paper bag, which people do when they have panic attacks.
  • Ambiguously Bi: Sean tried to impress an unnamed background girl in "Mindy's Meteorite Stand", and has rare Ship Tease with Sydney (like in "Night of a Bazillion Stars" and "Which Moon is Best?"), but he seems to like Jet as well. For example, when Western!Sean dreamily stares at him while admitting to liking the kooky feller.
  • Batman Can Breathe in Space: Sean can breathe in space, despite not having an oxygen tank.
  • Berserk Button: Do not lay a single fingerprint on his birthday telescope. You will never see the light of day again.
  • Big Eater: In "Sean's Year in Space", he tries to stay in the treehouse for a year but comes down when he smells pot roast. Also, it is revealed in "Whole Lotta Shakin'" that he stress-eats, and in "Project Pluto", he said that the Propulsions usually have snacks when the kids go to ask Carrot a question about Pluto, which earned him a funny look from Sydney.
  • Big "NO!": He screams "NOOOOOOOOOO!" in "Sean's Robotic Arm" when his Neil Armstrong figure falls down the hole.
  • Blue Oni: To Jet's Red Oni. Sean is more cautious and calm than Jet is.
  • Brainy Brunet: Sean and his mom are both know a lot about science, and they both have brown hair.
  • Broken Bird: If you think about it, Sean really has it rough. Sean’s got a Disappeared Dad and a mother who’s almost always working. He’s also a huge perfectionist. He always needs everything to be the way he wants it to, and he gets very upset when he doesn’t get his way. He idolizes Neil Armstrong heavily, to the point of obsession, and wishes to be like him, but he can’t. Sean also fears cramped spaces, heights, and easily gets space-sick (and motion-sick, and seasick...he's basically a borderline Ill Boy), which are things that are preventing him from becoming an astronaut. Despite wanting to be an astronaut, he heavily fears space, and is constantly forced by his friends to go. They never allow him to stay on Earth. He’s also somewhat of a Butt-Monkey within the group, and no one listens to him when he suggest using the Scientific Method to solve problems. He hides all of this pain with a Cheerful Child exterior. It makes you want to jump into the TV and give him a hug.
  • Butt-Monkey: Sean is a downplayed example of this trope. This is a show targeted towards younger audiences, after all. But he can't seem to ever catch a break.
  • Catchphrase:
    • "Let's think scientifically" - Standard catchphrase
    • "Poppycock!" - Western!Sean
  • Character Development:
    • In later episodes of the show, Sean becomes less scared of going to space. He even calls himself "Mr. Adventure".
    • It's subtle, but he doesn't get space-sick as often in Season Two. In fact, it's only ever been brought up twice; once in "Mindy's Ice Rink" (where the high-speed flying makes him feel sick) and again in "Astronaut Ellen Ochoa", where he mentions that the shift in gravity in space makes him space-sick (and appears to choke back vomit as well).
  • Child Prodigy: At least justified with Sean, as his mom is a scientist who works at the space program.
  • Cloudcuckoolander's Minder: Is this to Jet along with Sydney.
  • Companion Cube: His Neil Armstrong action figure.
  • The Cutie: Baby blue eyes? Check! Button nose? Check! Youthful Freckles? Check!
  • Deadpan Snarker: Sean can be this at times, but to a lesser extent than Mindy or Mitchell.
  • Disappeared Dad: Sean's dad is nowhere to be seen, though his mom is always shown.
  • Distressed Dude: In "My Fair Jet", Sean gets carried away by the DSA weather balloon, and Jet rescues him with his jetpack.
  • The Drag-Along: He almost never wants to go to space, but is often forced by Jet and Sydney to come along for the ride anyways.
  • Expy: Of Pearl, O the Owl, and especially Arnold Perlstein, since they're both neurotic nerds who are reluctant to go on trips, but are always forced to against their will.
  • Face Palm: Sean is quite fond of doing these, especially when Jet does something stupid. He facepalms in "Jet Cooks Dinner", "My Fair Jet", "Astronaut Ellen Ochoa", "Total Eclipse Block Party", and "Who Messed Up The Treehouse?".
  • Fanboy: Of Neil Armstrong. He's also a fan of Ellen Ochoa. "One Small Step" pretty much has him gushing over the Apollo 11 mission for 60 minutes.
  • Fatal Flaw: His fatal flaw is that he fears cramped spaces, heights, and gets space-sick easily, and yet he wants to become an astronaut when he grows up.
  • Fat Best Friend: He has a wide body and his tummy slightly bulges (particularly noticeable inthese photos), and he is friends with Jet, Sydney, and Mindy.
  • Get Ahold Of Yourself Man: The gang is usually this to Sean, who is usually apprehensive about going to space.
  • Gilligan Cut: Happens in "Space Junk", where Sean says there is no way he is flying outside the saucer. In the next scene, he says he can't believe he's flying outside the saucer.
  • Growling Gut: Whenever he feels sick, it's usually accompanied by his tummy gurgling.
  • Head Desk: Does a spectacular one in "Fact Or Fiction?".
  • Hidden Depths: Sean is revealed to be a great magician in "Magnet, PI".
  • I Always Wanted to Say That: Sean says this after saying "There's not a moment to lose!" and "Come on Zerk! Back to the house! And step on it!" in Back to Bortron 7.
  • Ill Boy:
    • A borderline example. He easily gets space-sick, motion-sick, and seasick note . It's especially noticeable in "Tiny Blue Dot", where he opens admits he feels nauseous, and the aforementioned "Jet's Time Machine", where he spent a good portion of the episode feeling dizzy and nauseous, almost threw up after one ride in the time machine too many, and at one point collapsed on the ground. In Season Two, it's also implied he has trouble sleeping. It's also probably worth mentioning that he got his very own Sick Episode, "Sean Has A Cold".
    • This was even (sort of) lampshaded in "That's One Gigantic Pumpkin, Jet Propulsion!", where he decorates his (green!) pumpkin with a hot water bottle on its head and a thermometer in its mouth.
    • Taken a step further in "Sean Has A Cold", where he has to stay in his room because he's sick.
  • Innocent Blue Eyes: However, animation inconsistencies often cause them to appear green or gray.
  • Insistent Terminology: His Neil Armstrong figure is an "action figure", not a "toy".
  • The Insomniac: Implied. He has creases around his eyes, and in "My Three Suns", there was a gag about him being unable to sleep.
  • I Will Find You: In "One Small Step", he becomes worried when Jet and Sunspot go missing. So, Sean and Mindy make it their mission to go and locate them. Along the way, they learn about the Apollo 11 mission. When they finally find Jet, they share a Group Hug.
  • Jerkass Has a Point: In "Lone Star", Western!Sean is a cranky shopkeeper who dislikes Lone Star's ideas because they actually could hurt the economy of Boxwood Territory. Western!Sean claims that if people are looking up at the stars all night, they will be tired in the morning and won't be able to cut down trees or dig for gold.
  • Kissing the Ground: Sean often does this whenever they get back from space, like in "One Small Step". A couple of times, he spits out grass.
  • The Lancer: Sean is this to Jet. While Jet, The Leader, always leaps before looking, is highly energetic, and unironically loves making mistakes, Sean is more cautious, intellectual, and nervous in general.
  • Leitmotif: The Scientific Method song. Compositions of it can often be heard in the background in his scenes.
  • Mama's Boy: Sean is this due to being close with his mom. It also helps that his dad is never around.
  • Mean Character, Nice Actor: In "Lone Star", Sean plays a Jerkass shopkeeper who doesn't believe Lone Star. However, Sean is actually a (cowardly) sweetheart in real life.
  • Nervous Wreck: Sean is pretty nervous at times, especially when going to space.
  • Not So Above It All: Sean becomes more excited about going into space with the others in more recent episodes, despite him wanting to go the space the traditional way.
  • Oh, Crap!:
    • He screams in terror almost every time they go into space. It's a wonder that he doesn't have a sore throat by now.
    • Yeah, about that...
  • Only Sane Man: Whenever the kids are faced with a problem, he often provides the logical method of solving it while the other kids deliberately play around and make mistakes to solve the problem. He often shares this role with Sydney.
  • Out-of-Character Alert: In "Date Night", "Not A Sound", and "A Hammer and a Feather", him actually wanting to go to space is met with concern and shock.
  • Pinch Me: Sean asks Sunspot to pinch him in "Space Junk", "Whole Lotta Shakin'", and in "Astronaut Ellen Ochoa". Sean doesn't actually mean it, but of course, Sunspot pinches him anyway.
  • Primal Fear: Sean is afraid of heights and being in tight spaces.
  • Rule of Symbolism: Sean represents science facts. In contrast to Sydney, who likes fiction, Sean is all about the facts. Sean likes to do things the old-fashioned way and does not like change as much as the others do, and he's got a hard time using his imagination as shown in "Backyard Moon Base", however he does come from a family of scientists AND astronauts, so he figures he's going to be a great scientist himself, and likes to use the Scientific Method to solve problems. He also wants to lead the first human mission to Mars, despite the fact that he gets space-sick easily, is afraid of cramped spaces, and has a fear of heights.
  • Running Gag:
    • Sean being nervous into space, and singing the Scientific Method.
    • In "Astronaut Ellen Ochoa", there's a running gag of Sean exercising while doing math problems.
  • Secret Keeper: Sean is one of the only people who knows the Propulsions' secret identities.
  • Sick Episode: Was subjected to this in "Sean Has A Cold".
  • Sharp-Dressed Man: In "Magnet, P.I", he gets to wear a tuxedo and top hat for a magic show.
  • Shy Finger-Twiddling: Sean does this in "Our Sun Is A Star!".
  • The Smart Guy: Sean is probably the smartest kid on the show. He often serves the role of The Smart Guy whenever Face 9000 isn't around.
  • Stage Magician: As shown in "Magnet, PI", Sean is an amateur magician called The Great Seanzo.
  • Stepford Smiler: If the Broken Bird entry means anything.
  • Straight Man: Sean is usually this when with Jet, Sydney, and Mindy, being the most logical of them all in any given situation.
  • Trademark Favorite Food: Sean loves pot roast.
  • Unmanly Secret: In "Sean's Neptune Tune", the thing he was trying to hide from Jet and Sydney was the fact that he was scared to go to Neptune because of a Commander Cressida comic.
  • Vague Age:
    • It is unclear what age he is supposed to be.
    • His age got even more confusing in "Sean's Robotic Arm", where we see images of him trying new things for the first time...except he doesn't look any younger and looks the same age he currently is. Then again, this could be due to the comic-book artstyle.
  • Vocal Evolution: In season 2, his voice is deeper and raspier, most likely due to puberty by his voice actor. In mid season 2, when his VA changed, his voice is more high-pitched and nasally.
  • Wingding Eyes: He gets fireworks in his eyes when he sees Ellen in "Astronaut Ellen Ochoa".
  • You Remind Me of X: In "The Grandest Canyon", Sean remarks that Mindy reminds him of a young him, but Sydney tells Sean that "you are still young you."
  • Youthful Freckles: Has these on his face. However, the lighting (particularly in outdoor scenes) make them hard to see.

    Sydney Skelley 

Sydney Skelley

https://static.tvtropes.org/pmwiki/pub/images/rjg_sydney.PNG
Voiced by: Dalila Bela (season 1) Vienna Leacock (season 2)
Sydney is the “sci-fi kid.” She loves sci-fi stories – ANY kind of story, in fact- but especially a multi-platform series, “Commander Cressida”, about a fearless female spaceship captain. Sydney is all about using her imagination. She represents the power of imagination in science – the person who asks “what if?” She knows that science-fiction ideas have inspired many technological innovations and advances and that scientists are as inspired by what they saw on Star Trek as anything in a scientific journal.

Sydney's mom is a robotics engineer who works at the DSA.


  • Absentee Actor: Sydney was absent in "Sunday Drive", "Castaway Carrot", and "Earth Camping".
  • Acting for Two: In "Lone Star" she plays both one of the townspeople, and the town's only science teacher.
  • Action Girl: Sydney can slip into this territory at times, most notably in "Back to Bortron 7".
  • A Day in the Limelight: In "Sydney 2".
  • Affectionate Nickname: Her mom calls her "Syd" in "Sydney 2".
  • Agent Scully: In "Fact Or Fiction?", where she, along with Sean, doesn't believe that clouds are made of cotton candy (and she's right).
  • Alliterative Name: Sydney Skelley.
  • Almost Kiss: In the TV movie "Back to Bortron 7", during the Just Add Water number, Jet and Sydney are almost about to either hold hands or kiss, but Celery obscures the shot.
  • Batman Can Breathe in Space: Sydney can breathe in space, even without a spacesuit with an oxygen tank.
  • Berserk Button: Sydney will get pissed if you make her miss one episode of Commander Cressida.
  • Big Damn Heroes: In the one-hour special "One Small Step", Sydney gets her moment when she and Jet 2 fix the super saucer together, allowing the gang to return home.
  • Black and Nerdy: Not nerdy in the typical sense, but she's nerdy in that she's a science-fiction geek who knows a lot about Greek mythology. She's also shown to know quite a bit about mechanics.
  • Black Best Friend: Sydney is black, and is best friends with Jet, Sean, and Mindy.
  • Buffy Speak: She refers to Jet's backpack as a "tool-armed backpack thingy".
  • The Cameo: Made one at the beginning of "Treasure Map".
  • Catchphrase: "A kid's place is exploring space!", which is also the catchphrase of Commander Cressida.
  • The Chick: In the group's Five-Man Band, Sydney is this. She often acts as the peacekeeper for the group, and helps keep the team together.
  • Child Prodigy: Along with the other kids, Sydney seems to be this, as she knows tons of Greek mythology, especially for her age.
  • Cloudcuckoo Landers Minder: Both Sean and Sydney are this to Jet.
  • Companion Cube: Her Commander Cressida action figure.
  • The Conscience: Serves as this to the rest of the clique members. She will usually talk them out of doing something that is silly or wrong, and will give them wise advice.
  • Cool Big Sis: Sydney acts as one towards the rest of the main cast, being cool in the sense that she's kind, wise, and motherly, and also in that she's intelligent and creative.
  • Disappeared Dad: Sydney has a mom as revealed in "Back to Bortron 7", however her dad is nowhere to be seen, despite the fact that she said she has a dad in "Mindy's Mystery".
  • The Everyman: Sydney is the most average out of the entire main cast (at least until Mindy became a Flat Character in Season Two).
  • Fangirl: Sydney is this to Commander Cressida.
  • Fatal Flaw: Finally gets one in the season 2 episode, "Sydney 2". She is shown to be over-ambitious, shown when she assumes that programming the eponymous robot will be easy, until she realizes that robots don't know how to be friends.
  • Foil:
    • To Sean. They are both friends of Jet and they are both his minders and kids that love science. Sean likes science facts and sometimes doesn't understand imagination being used in science. He is also more prone to panicking under pressure and, of the main characters, is the most prone to grab the Jerkass Ball (most noticeable in "Sounds Abound"). On the other hand, Sydney prefers science-fiction and using her imagination in science. She is quite calm and laid-back, and is also a motherly Nice Girl.
    • She's also a foil to Lillian. Both are the very kind-hearted and imaginative girls in their respective groups. But while Sydney is smarter and, while imaginative, knows how to separate fiction from fact, Lillian is more air headed and easily believes in the supernatural.
  • Gender-Blender Name: Her name can and has been used for females and males.
  • Hidden Depths: Sydney is shown to have a real knack for engineering and mechanics. She builds her own robot in "Sydney 2", and fixes the saucer in "One Small Step".
  • Instant Costume Change: Whenever the group goes into space, Sean and Sydney instantly change from their regular outfits to their space suits.
  • Kissing the Ground: In "Tiny Blue Dot", Sydney, along with the others, kisses the ground when they get back from space.
  • Limited Wardrobe: Sydney doesn't really wear any other clothes besides her regular outfit and her space-suit. She doesn't even wear pajamas when she goes to sleep!
  • Meaningful Name: Her surname, Skelley, means "storyteller", which suits Sydney due to her love of telling stories.
  • Ms. Fixit: She was able to fix the saucer in "One Small Step", with the help of Jet 2, of course.
  • Ms. Imagination: This is her defining character trait. Sydney likes to use her imagination in science, which contrasts with Sean's all-consuming drive for science facts. She often leads the kids in Imagine Spots.
  • Nice Girl: This is also her defining character trait. Sydney is very kind-hearted and cares for her friends. She's even fairly nice to Mitchell Peterson.
  • Only Sane Woman: Sydney can be this at times, especially if Sean (who she shares the role of the Only Sane Person with) is being Out of Character. For example, in "Back to Bortron 7", she suggests talking to Jet's parents instead of assuming that they're moving back to Bortron 7 and trying to hide the house remote. In fact, they both serve this role in "Fact Or Fiction?".
  • Rule of Symbolism: Sydney represents the power of imagination in science. Sydney is obsessed with science fiction and comics, and idolizes a character named Commander Cressida. She is very imaginative and likes to think creatively in situations, as well as create her own fanfictions about Commander Cressida in the treehouse. She correctly states that science-fiction ideas have inspired many technological innovations and advances, that scientists are as inspired by what they saw on Star Trek as anything in a scientific journal.
  • Secret Keeper: Along with Sean and Mindy, Sydney is the only one who knows that the Propulsions are aliens.
  • Shipper on Deck: Along with the other kids, she is a major Mindy/Mitchell shipper. This is evidenced when she cheered after Mindy and Mitchell got "engaged" at the end of "Detective Mindy", and when she pulled Mindy and Mitchell close together in "Mindy's Mystery".
  • The Smurfette Principle: Within the older kids, she is the only girl.
  • The Storyteller: Sydney loves telling stories. She often tells her stories to the other kids.
  • Strawberry Shorthand: She likes strawberry cupcakes, as shown in "My Three Suns".
  • Team Mom: She often plays this role to the other clique members, especially Jet and Mindy, given her wise and kind-hearted nature that gives the impressions of a mother-like figure.
  • Token Minority: Sydney is African-American.
  • Tomboy and Girly Girl: Sydney is the tomboy to Mindy's girly girl, as Sydney as no interest in feminine things.
  • Vague Age: It is unknown how old she is.
  • Vocal Evolution: In season 2, her voice sounds much younger. However, it does get deeper in "One Small Step".
  • Women Are Wiser: Sydney is not the smartest kid in the group, but she's definitely the wisest.
  • Wrench Wench: Sydney is shown to be an expert mechanic in "One Small Step", fixing the super saucer with ease.

    Mindy Melendez 

Mindy Melendez

https://static.tvtropes.org/pmwiki/pub/images/mindy_melendez_rjg.png
Voiced by: Jaeda Lily Miller
Mindy lives across the street and is always coming over to see what the bigger kids are doing. Mindy is 4, so she asks the real questions that 4-year- olds ask about space. The answers to the these questions are often what the episodes are about. She's not always in possession of the facts and is still a magical thinker. To her, the phases of the Moon mean that there are “a lot of moons, like the round fat one, and the one shaped like a taco, and the skinny, pointy one."

In the season 2 episode, "Mindy Turns Five", she turns five and gets to go to space.


  • Abhorrent Admirer: She appears to be this to Mitchell in several episodes. For example, in "Kid-Kart Derby", she asked Mitchell to come see Jet's electric engine with her, which can be interpreted as Mindy trying to ask Mitchell out on a date, but Mitchell coldly rejects her. However, this averts starting in "Detective Mindy", where they are now on pretty good terms with each other.
  • Absentee Actor: Mindy is absent in "Space Junk", "Asteroids, Meteors, and Meteorites", "Sunday Drive", "Whole Lotta Shakin'", "My Fair Jet", and "Treasure Map".
  • Adorably Precocious Child: Mindy counts as this along with the other kids.
  • Ageless Birthday Episode: Mindy has her birthday in "Mindy's Moon Bounce House", but it is unspecified what age she became. Even though Mindy was 4 until "Mindy Turns Five".
  • Agent Mulder: She believes in ghosts, witches, magic, and demonic spiders, things that Mitchell believes aren't real, as shown in both "Jet's First Halloween" and "That's One Gigantic Pumpkin, Jet Propulsion!". In "Who Messed Up The Treehouse?", she believes that clouds are made out of cotton candy.
  • Alliterative Name: Mindy Melendez.
  • All Love Is Unrequited: Mindy seems to like Mitchell, but he often rejects her advances. This averts in later episodes, however.
  • Animal Motif: She has a bear motif. She wears a hat with bear ears, has a teddy-bear named Stuffy Bear, dresses up as Stuffy Bear for Halloween, and her space helmet has bear ears on it.
  • Animation Bump: Mindy has carefully animated hair, and her large pigtails are detailed and can often be seen moving and bouncing with the smallest movements of her head, which helps portray her innocence.
  • The Baby of the Bunch: Mindy is the youngest in the group, and does not get to do as much stuff as the older kids.
  • Batman Can Breathe in Space: Like Sean and Sydney, she can breathe in space even though her space-suit lacks an oxygen tank.
  • Birthday Episode: "Mindy's Moon Bounce House" and "Mindy Turns Five".
  • Cheerful Child: She is one of the prime examples of this trope, given that she is four (later five) years old. You can probably count all the times she doesn't smile in one episode with one hand.
  • Comically Missing the Point: In "Who Messed Up The Treehouse?", when Sunspot tries to tell the kids that they all made the mess, Mindy thinks that a parade of squirrels came into the treehouse and made a mess.
  • Companion Cube: Mindy's teddy-bear, Stuffy Bear.
  • Constantly Curious: Pretty much speaks for herself. Mindy's entire purpose in the show is to represent curiosity.
  • Curtains Match the Window: Mindy has brown hair and brown eyes.
  • The Cutie: Just look at her.
  • Deadpan Snarker: Mindy can be this at times. For example, Mindy savagely roasts Sean in "Mindy's Moon Bounce House" when he is trying to teach her about gravity by saying that he can't catch.
  • Disappeared Dad: She has a dad, but he is nowhere to be seen.
  • The Ditherer: In "Commander Cressida Begins" at least. That episode is about her being unsure of where to go next in regards to space.
  • Everything's Better with Sparkles: She absolutely loves glitter, as shown in "From Pluto With Love" and "Every Day Is Earth Day".
  • Flat Character: And unfortunately so. Unlike, Jet, Sean, Sydney, Mitchell, Zerk, and Lillian, who all have Fatal Flawsnote , Mindy doesn't have one. There's not that much to her outside of being curious and even a bit snarky. Conflict has never been directly caused by her, nor has her vices been the driving point of an episode. It doesn't help that she's a Creator's Pet as of season 2, and has been over-promoted by PBS all because of her turning five years old.
  • Girlish Pigtails: Mindy wears her hair like this, representing her youth.
  • Girls Love Stuffed Animals: She has a teddy-bear named Stuffy Bear.
  • Girly Girl: Mindy loves the color pink, dolls, teddy-bears, and tea-parties.
  • Hidden Depths: Mindy is revealed to be a great flugelhorn player.
  • "I Am" Song: "My Name is Mindy".
  • Idiot Ball:
    • Grabs this in "Galileo, Galileo!" where she is convinced that the Sun revolves around the Earth, despite learning the opposite in "Round and Round".
    • She also grabs this in "Our Sun Is A Star!", where she believes that the Sun isn't a star, even though she learned that the sun is a star in "How We Found Your Sun".
  • It's All About Me: Mindy can be this at times. For example, Mindy remarks that the other kids can't think of good ideas like she can because they're just not her. Also, in "Sounds Abound", a one-off joke was that Mindy wanted Sean to name a planet after her.
  • I Will Find You: In "One Small Step", she becomes worried when Jet and Sunspot go missing. At one point, Mindy even thinks that a "moon monster" got them. So, Sean and Mindy make it their mission to go and locate them. Along the way, they learn about the Apollo 11 mission. When they finally find Jet, they share a Group Hug.
  • Kid-Appeal Character: Mindy was added to appeal to the younger demographic. And it apparently succeeded. The show's Facebook once had a contest where in order to win a DVD that had some episodes of the show on it (as well as space-themed episodes of other PBS Kids shows), the parents had to comment their child's favorite character. A very large chunk of parents said that their child's favorite character was Mindy.
  • The Kirk: Mindy serves this role in her group with Lillian and Mitchell, as seen in "That's One Gigantic Pumpkin, Jet Propulsion!". Lillian and Mitchell are different in many ways, but Mindy brings them together (because she is Lillian's friend and Mitchell's implied crush) and easily balances them out.
  • Latino Is Brown: She's Latina and she has brown skin, although coloring inconsistencies can make it appear lighter than it probably should be at times.
  • Leitmotif: "My Name Is Mindy". If you listen closely, you can hear an instrumental playing when she's around sometimes.
  • Little Miss Snarker: Mindy is this trope in spades.
  • Missing Mom: Mindy's mom is heard, but never seen.
  • Never Bareheaded: She is never seen without some kind of hat on. She even wears a hat when she goes to sleep.
  • Nice Hat: Her bear hat.
  • Nice, Mean, and In-Between: Mindy is the In-Between to Lillian's Nice and Mitchell's Mean. While Mindy is generally a friendly girl, she is not above making snarky comments at others' expense from time to time. She is usually the one to balance Lillian and Mitchell out.
  • Not Allowed to Grow Up: Averted, as she turns five in "Mindy Turns Five".
  • Only Child Syndrome: Mindy is an only child (and she remarks that she's glad to be so after seeing the Faces argue in "A Kid's Guide to Mars"); however this trope may avert soon as in "So Many Moons", Mindy said that her parents were thinking about having another baby.
  • Positive Discrimination: Mindy is a girl and a Latina. She almost always succeeds at everything she tries, and is never the butt of anyone's jokes.
  • Rule of Symbolism: Mindy represents curiosity. Mindy was originally not in the show, according to the producers. But after testing the initial pilot with children, the producers decided to add Mindy in to have a character for the younger set to look up to as a role model, since this show is more for older kids. Mindy doesn't know a whole lot about science, and is far too young to go into space with the others, but she’s welcomed into the group, treated as an equal, and never talked down to. Mindy is often the reason for the episodes' plots. Due to her curiosity, she often asks a basic, kid-friendly question about space which prompts the kids to look for an answer, either by going into space or by staying on Earth.
  • Running Gag:
    • Mindy not being able to go into space due to not being allowed to go anywhere past Jet's yard.
    • Also, Mindy sneaking up on Mitchell.
  • Secret Keeper: Along with Sean and Sydney, she is the only person who knows Jet's secret alien identity.
  • Ship Tease:
    • Starting with the episode "Mindy's Weather Report", it seems as though Mindy has a huge crush on Mitchell, though it's never outright stated in the show. In the aforementioned episode, Mindy acts nervous and stammers when Mitchell comes to see her weather report. In later episodes, Mindy starts sneaking up on Mitchell, much to his chagrin. In "Solar System Bake-Off!", she rejoices at the fact that Mitchell is entering the baking contest, and immediately starts acting touchy-feely towards him, and wants him to join her team. Mindy also seems to win Mitchell over with her Saturn cake towards the end of the episode. As mentioned above, Mindy asking Mitchell to check out the electric engine with her can be interpreted as Mindy trying to ask Mitchell out.
    • Mindy has the most ship tease with Mitchell ever in "Detective Mindy", where he actually shows signs of liking her back. The icing on the cake is when at the end of the episode, Mitchell gets down on one knee and suggests that he wants a friendshipnote  with Mindy. Then the other kids cheer wildly as the episode ends, as if Mitchell proposed to Mindy and she said yes.
    • She hugs him in "Sean's Robotic Arm".
  • Spotlight-Stealing Squad: Due to being a very popular character in the target demographic of children, she has the lion's share of spotlight episodes and overall focus in season 2. She has a major role in almost all of the episodes she appears in, even more than Jet himself. This practice has reduced screen-time for Sydney, Face 9000, Dr. Rafferty, Dr. Bergs, Mitchell, Uncle Zucchini, and Lillian.
  • Strawberry Shorthand: She likes strawberry ice cream.
  • Tagalong Kid: Mindy is the youngest of the clique and wants to go into space, but can't because she can't go anywhere past Jet's yard. At least not until season 2.
  • Token Minority: Mindy is Latina.
  • Tomboy and Girly Girl:
    • Mindy is the girly girl to Sydney's tomboy.
    • Mindy is herself the tomboy to Lillian's girly girl, as seen in "The Grandest Canyon". Mindy may be fairly feminine in her own right, but Lillian appears to be even more so, right down to her blatantly feminine outfit when she first appears, in comparison to Mindy's more, um, plain usual outfit.
  • Vocal Evolution: Mindy's voice started off soft and with a slight lisp (it's especially noticeable in the online game Mindy's Constellation Exploration), but over time, it becomes much more louder and nasal.
  • Women Are Wiser: Mindy, though only 4 (later 5), is sometimes wiser than the older kids. A good example of this would be in "Treehouse Space Station", where she figured out that the kids need to share the treehouse before anyone else did.
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