Daily Yo-kai Watch Factsさんのイラストまとめ

Tut 'n K'mon's skill in Yo-kai Watch 3, "Places to Be", makes him mandatorily leave mid-battle and neither medicine nor a recovery Soultimate Move can bring him back.

Junior is the only Yo-kai to have multiple Shadowside forms, those being Burning Dragon and Blizzard Wolf.

Libertynyan is based off of Jibanyan from his NYCC'15 medal. Strangely, Libertynyan is of the Heartful tribe, not the Charming tribe like the medal he's based off of.

Nozuchika Mitsumatagi's Yo-kai Hero, The Viper, bares a striking resemblance to Sly, who he is also the indirect reincarnation of.

Kuro Gashado is a boy that can be seen at the Capsule Machine Club in Y School Heroes: Bustlin' School Life. He is the reincarnation of Gutsy Bones, whose Japanese name is "Gashadokuro".

Dober Vader is based off of the "Star Wars" villain, Darth Vader.

Rinne speaks using formal speech (such as "desu" and "shou") in all of his appearances, even in the Y School Heroes manga.

Mimikin is a Yo-kai that was exclusive to the American version of Yo-kai Watch Wibble Wobble, and in turn the "Wib Wob Me" app does not exist in any other version.

Kagamine Rin and Kagamine Len (characters from "Hatsune Miku: PROJECT DIVA") have their very own cover of "Yo-kai Exercise No. 1", arranged by Giga-P, one of Vocaloid's producers.

Submitted by @swift_uhm

Supernyan is based off of Superman, and his counterpart, Kaped Komander, is based off of Batman.