The Yo-Kai that appear in the sequel series Yo-kai Watch: Shadowside.
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Prominent Yo-Kai
Jibanyan
Jibanyan's Lightside form
30 years after the original series, Jibanyan returns with a brand new look. Now partnered with Nate's daughter Natsume, they work together to battle mischievous Yo-Kai.
- The Ace: Zigzagged. He is incredibly powerful, but can suffer from The Worf Effect and Strong as They Need to Be.
- Amnesiac Hero: Has no memories of the past. Though episode 11 makes it clear that he regained at least part of his memory sometime before episode 3.
- Art Evolution: Jibanyan's appearance greatly differs from his original one, especially in his Shadowside form.
- Cats Hate Water: He is extremely ticked off when Natsume summons him to fight Gesodrill, a squid Yo-kai, because of this trope. He refuses to fight, tells Natsume to never summon him near water, and leaves.
- Brainwashed and Crazy: Gets infected with the Soranaki virus, and it isn't pretty.
- From Nobody to Nightmare: In the original series, he was so weak that he couldn't even dent a truck. In Shadowside, he's regularly destroying trucks with extreme prejudice and causing traffic accidents.
- Kid Hero All Grown-Up: Jibanyan is no longer the cute little kitten he used to be with the cute little voice he had 30 years ago.
- Ineffectual Loner: Starts out as this, initially refusing to join Natsume in the movie.
- Took a Level in Badass: Jibanyan has drastically gained more power than he did in the original series. Especially in his Shadowside form he can practically defeat almost any Yo-Kai he encounters.
- Vocal Evolution: Jibanyan's voice sounds incredibly deep compared to how he sounded in the original series. Granted, this series takes place 30 years after the original series, so he would've gotten older by then.
- Though in episode 12, when he reverts back to his original form, he gains his cute voice again briefly.
Whisper
Whisper's new appearance
30 years later. Whisper returns with a brand new look. Like Natsume's father Nate, he becomes her butler. As always he'll try his best to provide info about Yo-Kai.
- Adaptational Intelligence: Whisper is considerably more competent than he was in the original series. He teaches Natsume about the new Yo-Kai watch and is well versed in the concept of Lightside and Shadowside forms.
- Adaptational Badass:
- While he's still a Butt-Monkey even after all these years, episode 8 shows that if people aren't willing to cooperate, he allows them to see him so he can scare an answer out of them.
- In episode 28, when the others are having trouble stopping Sebas-san, he tackles her and stops her from controlling Keisuke and his friends.
- Butt-Monkey: Like in the orignal series, Whisper is prone to being this.
- Know-Nothing Know-It-All: While this is still part of his backstory, this trait is considerably toned down as he isn't relied upon to identify Yo-Kai anymore and thus doesn't make things up while frantically browsing Yo-Kaipedia.
- Perpetual Smiler: Not quite as expressive as his past self. Usually anytime we see him, he's sporting a toothy grin. It helps with the unsettling appearance Shadowside forms can have.
- Smug Snake: Much like in the original show, he provides snarky commentary while ignoring his own personal flaws. Though unlike Micchy, he's not quick to throw himself into danger and is mostly just full of hot air.
- Sudden Anatomy: Whisper used to just be a wisp-like ghost. Now he has ears and fingers.
- Those Two Guys: With Micchy and Junior.
- Truer to the Text: Whisper's compentance is now closer to his original portrayal in the very first game.
- You Don't Look Like You: Out of all the reccuring Yo-kai, Whisper probably looks the least like how he used to. Though him having hair and wearing clothes makes him resemble Nonuttin, his former self.
Komasan
Komasan's Lightside form
A dog that belonged to Akinori's family was crushed under a Komainu statue and died, turning into this Yo-kai.- Anthropomorphic Shift: Inverted. In the original series he's a bipedal Komainu who looks more cartoony than realistic and resembles a Cute Kitten more than the actual animal, but here he's quadrupedal and looks more realistic. Justified as he's actually a different Komasan entirely.
- Cartoon Creature: Subverted. He looks like a dog now, unlike in his original design.
- Continuity Snarl: Subverted. His backstory doesn't match the original Komasan's in the slightest, raising the question of whether Shadowside is an Alternate Continuity and/or this Komasan is a different person that the one we know. From the backstory given for him, he seems to be a different Komasan. The latter seems to be confirmed in episode 27, He only took the name Komasan to remember his brother Komajiro.
- Eyes Always Shut: In his Lightside form, at least. For his Shadowside it's...
- Red Eyes, Take Warning: Or red pupils, in this case.
- Superior Successor: In the original series, the first Komasan was a wimp who got lucky in the only fight he was ever in. The new Komasan comes in second to Jibanyan in badassery.
Komajiro
Komajiro's Lightside form
A frog who has a brotherly friendship with Komasan. He was crushed under the same Komainu statue as Komasan and became a Yo-kai.- Adaptational Species Change: Unlike the original Komajiro, he's now a frog instead of a komainu.
- Informed Attribute: He is apparently bipedal in his lightside form but only the reverse has been seen.
- Punny Name: Unlike the original, Komajiro's name is based off of the Japanese word for a frog croak, "Giro".
Micchy (Slimamander)
Micchy's Lightside form
Formely a terrifying Boss Yo-kai, Slimamander has come to admire humanoid Yo-kai, and wants to be a heroic knight, too. One of Natsume's Yo-kai Partners.- Adaptational Wimp: Went from being one of the first bosses in the game to being the designated jobber that gets defeated in one hit.
- Adaptational Nice Guy: He admires humanoid yokai and humans in general. He even gave a Declaration of Protection to a human!
- Always Save the Girl: He considers Natsume the Damsel in Distress he has to save.
- Butt-Monkey: Like Whisper, he's prone to this.
- Knight in Shining Armor: What he thinks he is.
- Miles Gloriosus: What he actually is.
- Taken for Granite: Still has his petrifying gaze attack.
- Those Two Guys: With Whisper and Junior.
- Timed Power-Up: Hyper Micchy, though he usually gets distracted explaining and bragging rather than being useful until time runs out.
- Unwanted Assistance: He will show up to fights without Natsume's permission.
Junior
Junior's Lightside form
A small Yo-kai, both ghost-like and cat-like, who is said to have a deep connection to a certain Yo-kai.- Adapted Out: He doesn't appear in the Shadowside manga.
- Brutal Honesty: He doesn't hold back telling people what he thinks of them. His first comment on Akinori is that he should lose weight. He also tells Keisuke his comedy sucks and that he should give up in episode 6.
- Children Are Innocent: Snarky tendecies aside, Junior is this.
- From a Single Cell: How he was born. He was formed from the pieces of flesh that came off of Jibanyan when he took a huge wound fighting Shinigami.
- Generation Xerox: He and Keiskue have the same relationship as Nate and Jibanyan.
- Human Disguise: Redhead.
- Ridiculously Cute Critter: He's even voiced by Etsuko Kozakura, like classic Jibanyan.
- Tag Along Kid: Plays this role among the rest of the Yokai cast.
- Those Two Guys: With Whisper and Micchy.
- Voluntary Shapeshifting: Can transform into balloon-like copies of beings and objects he sees.
Other Yo-Kai
Jinta
A human anatomical model that has been in Keisuke's elementary school for 50 years turned Yokai. His Shadowside form is Jingeki.
- Shout-Out: Jingeki heavily resembles the Colassal Titan.
Pakkun
A yokai of a venus flytrap. Having a vision the woman that worked at the flower shop would get involved in an accident on her usual route home, Pakkun turned into a yokai in an attempt to prevent it.
- Shout-Out: Akinori named her after the Piranha Plant (Pakkun Flower in Japan). Her Shadowside form brings to mind Audrey II.
Atsushi Kamamoto
An idol producer turned Yokai.
- Benevolent Boss: According to some of the former idols he helped produce, he was a kind and helpful producer that worked hard to help them improve. In fact, his negative emotions that turned him into a yokai were not over being run out, but rather feeling he failed the idols under him by letting them get overshadowed.
- Meaningful Name: Atsushi means 'hot' while Kamamoto means 'pottery', matching his idol groups having a pottery theme and his former occupation. His Shadowside form Kamadouma is a play on 'cave cricket' and 'furnace horse', and he resembles a bug-like creature shaped like a pottery kiln.
- Was Once a Man: While there have been other Yokai that were once humans, Atsushi stands out as he didn't die and rather turned into a yokai because of his negatives emotions of his idol groups being run out of business. Reflecting this, he's the most human-like of the yokai in Lightside form save for his eyes and skin and is able to be seen without the Yokai Watch.
Hana-chan
A yokai formed from the spirit of an old doll on display that desired to play with children again. She chose to inhabit the mascot costume of a new character in an amusement park named Hana Poncho ten years ago, but her enthusiasm caused the character to be retired on the same day after she inadvertently scared the children. Being possessed by Shinma and desperate, she began kidnapping children from the amusement park to be her playmates.
- Brain Washed And Crazy: She and many other Yokai are possessed by Shinma.
- Creepy Cute: Discussed In-Universe. Hana Poncho was partly retired due to not appealing to an audience when first introduced ten years ago (on top of Hana's actions frightening the children). But as Natsume tells Hana-chan, nowadays there's appeal for characters like Hana Poncho, which allows for the character to make a comeback and return to being active.
- Creepy Doll: Her general motif resembles traditional Japanese dolls and katakuri.
- Goofy Suit: She inhabits the costume of Hana Poncho as a way to interact with children.
- I Just Want to Have Friends: Hana-chan's real body is an antique doll on display. Because of this, she split off from her body so she could be able to find playmates like she used to do.
Yo-Kai Villains
Oni King Rasen
A powerful oni king and the true leader of the Onimaro, he is said to be the largest threat to the Yo-Kai world of all time. He's the main antagonist of Yo-kai Watch: Shadowside - The Return of the Oni King.
- Emotion Eater: He feeds on the malice of humans to become stronger.
- Fat Bastard: He initially appears as an giant, overweight oni.
- Knight of Cerebus: Even taking the film's darker tone into account, he is one of the most sadistic and evil characters that the heroes only barely manage to defeat. Even to the point of nearly killing two main characters.
