Fillerbunny is a pink bunny. It appeared for first time in the Johnny the Homicidal Maniac and later had it's own spin-off: Fillerbunny (comic).

There was a lot of fan speculation once Fillerbunny received its own comic, as it was once drawn as, quite literally, a filler for the comic. When it was drawn much better in the comic, some fans cheered, while many were against this comic.