Gimmick! EXACT☆MIX considerably ages up Yumetaro's owner compared to the original Mr. Gimmick, giving her a visibly adult appearance despite still filling the role of a small child. In light of this, the game's cutscenes feature an Easter egg where, while being teleported, the girl's clothes briefly disappear for a few frames, followed by her lingerie.

In Gimmick! 2, this retcon would be undone, re-establishing the girl as having been a child during the events of the first game, and setting up a time skip where she has become an adult and Yumetaro has been passed down to her daughter.