Yes — A lot of them are either failed or notional tabletop role-playing game characters. A handful of older characters are characters from an MMO, "Wildstar".

A lot of the characters have grown beyond their initial scope, but I don't have a lot of creative avenues for thing outside of drawing (writing, roleplay, actually playing games) so very little of that gets realized.

If you have questions about a specific character, let me know. I'll tell you what there is to know.