Ceiling Crasher
Ceiling Crasher was the first ghost Mob actually exorcised, so he's kind of a big deal as far as series debuts go. He showed up early on and set the tone for what was to come.
Visually, he looked pretty much human—or at least humanoid—with the notable exception of his wild, puffy green hair. He wore clothes like a normal person, which made him stand out less than you'd expect for a ghost, honestly.
Content compiled by AnimeList.moe from publicly available sources.
