I am Magnaman (a character I created for a series of comic books I drew when I was younger but never published anywhere). Magnaman is big and muscular with dark skin and snow white hair, has megastrength (enough to toss a car like it was a football) and is tough enough to withstand cannon fire without damage. When he IS damaged, he can heal 100 times more rapidly than normal humans from anything that dos not kill him outright. He cannot fly but can run as fast as a racing car and leap a mile or so at a time. He has high resistance (but not total immunity) to most poisons and diseases. He has no other powers.
The source of his power is a secret .
His main weakness is also a secret but it is related to his source of power.
Since there seems to be only one interesting villian here so far I guess I'll opt for being a villian. Actually, a mercenary like The Solution who can go either way, except that Magnaman will not kill except in self defense or unless he thinks the person really deserves it (say, Al Quida terrorist level bad guy). He doesn't work for money though. He works only for TUGs.

So he can be hero or villian depending on who hires him and how well they pay him. He is more the demolition type than the assassin, in other words... say, if an enemy base needs remodeling / obliteration.
Not being hired yet I have taken no sides. Anyone want a superstrong ally?
Dare to be different... and make a difference.
To boldly go where no one in their right mind has gone before...