[@Mr Allen J]
1) Noted, will edit.

2) Dodging bullets sounds retarded in the retrospect, yes.

3) His power is literally "Supernatural understanding and manipulation of biology". His powers do follow a theme, which is well, things that you can do with biology and all things that he can do stem from him surgically altering his body in accordance to his desires, being able to do so thanks to his almost better-than-perfect understanding of all things that directly relate to living creatures and processes in their bodies. I guess i should've actually noted the major weakness he has, which is the fact that new organs don't appear instantly and invasive surgeries don't happen in a blink of an eye - though of course for him they DO take much less time than for any modern doctor or scientist. As such, needs time and some equipment for the truly outrageous exploits. The analogy can be drawn with the Iron Man, for example. Tony Stark is a genius engineer, who makes himself into a wondrously powerful flying brick thanks to the power armours and it's gadgets that he crafted. Same thing here, only instead of making a powered armour with electrically-stimulated myomer bundles Gutmadder grows and grafts to himself incredibly dense and powerful muscle.