Here's my character Black Ice...I view him as a villain...for obvious reasons methinks...
Black Ice can cover his body and most surfaces (anything except metal) with a very slippery, very tough black ice...even his clothing which is how the skull decal shows and why his mouth does not show. With minor concentration, he can also use this ability to make icicle weaponry through the holes in his lightweight metal gauntlets (among other things) or make a certain area of his body more dense for defense...He can also freeze objects that he touches except of course metal...He is a good and experienced hand-to-hand combatant with impeccable balance and agility. His strength is normal for an athlete of his size. His speed is slightly greater than normal especially when combined with a slide across some black ice!!
Hope ya dig!!