After looking at this thread a couple of times, I might as well post here if I do not join. I had some character ideas for this one, and I might have one that could work or at least a working idea. A version of Deadpool, a bit more serious, who got cancer later in life when he got a family and would go through the experimentation as normal and be somewhat insane and fourth walling but lost most of his memories after it. He still remembers his family and his name and is driven to recover his lost memories while fighting crime at the same time. .
Still thinking of a solid concept, but that is one.