I'm here as well.

May make a boy sponsored by Animal Man.

As for a power, I was thinking this: 

Basically, Sin, my character, was born with the DNA of an unknown species. It's not known whether it was injected into him by an insane, fake 'doctor', or if his mother was originally born with it herself, but this unique mutation has virtually changed his entire DNA system, forming his blood into wild, fluctuating cells that goes by the name of 'nanolite'. This has given his over-all physical and mental core increased conditioning due to it not being comparable to simple human DNA cells, meaning superhuman attributes and instinctive reactions.

This genetic mutation also came with the manipulation over his own body. Sin has complete control over the anatomies and bodies of his own self, including skin, nails, fat, muscles, blood, nerves, etc., allowing him to freely alter and manipulate them. He can grow additional appendages and body-parts, remove them or otherwise manipulate his body in visible, chemical and cellular/sub-cellular levels.