Oshare Bones (EntityTopic, 7)
From Compile Worlds
Oshare Bones is a blatant (maybe) expy of Skeleton T, in that he is a bunch of living bones with weak AI and strange hobbies. Unlike Skeleton T, though, he doesn't have a trio to conspire with, runs a shop, and is utterly obsessed with fashion, being critical to those he deems inferior at fashion (Amitie and her red Puyo hat, for instance) and giving out suggestions wherever he goes. Just in case that hasn't been obvious to you yet, this guy wears a upper-class wear, complete with a top hat.
Anyway, PP15th gives out a few hints of his past, which includes age (Over 100, guessed Raffine correctly), appearance (Curly blonde hair) and love life (Who apparently looks like Satan). That's the end of it, though, and judging by how only the major characters get their own backstories, and the fact that we're not very good at Japanese, we may never know...
In Puyo Puyo!! 20th Anniversary, Oshare is nowhere to be found, and his shop has been hijacked by Popoi, who is now selling Strange Klug and giving away Human Ekoro and 15th modes as raffle prizes. Oshare's pieceset wasn't even passed on to another character.