Weird comic questions...

Today at work I found myself thinking of some of the old comic books that I used to collect and/or read over the years. One of them was Cyberella, a sadly-too-short bit of silliness from 1996-97. I know I used to have all the issues, but since moving out, I don't know if it's still around. So I'm wondering, does anyone know if there's a trade available anywhere? Or at least a used copy of a trade for sale?

The other one of course was Transmetropolitan, which I know I can find easily in any bookstore and online. So I figure I should get around to buying the trades at some point.

Third was Frank Miller's Hard Boiled, which I also know I can find.

Fourth, and this one's the one that's bugging me now, is one with very Jhonen Vasquez-like artwork about a 6-year old boy living in a mental institution who wears a straitjacket and has a wiseass-talking mouse as a friend. I can't for the life of me remember what it's called but I remember being quite amused by it. Anyone remember what it might be, and if it's available in trade?

Thanks ahead of time!