I've got two character concepts that I could bring in here. Either one could be Hero or Villain, depending on what's presently needed.
Brickbat - Brickbat was originally created in Champions pencil-and-paper system, and may be too powerful for this game. He can be tuned if the character concept is appealing enough. He'd probably be an A-class character, based on your scale.
Brickbat is a character based around kinetic absorption - he can be hit by baseball bats, iron girders, and cars, and it only makes him stronger. He has slightly above-human Strength and Resistances normally, but when he gets hit with kinetic attacks, he gets stronger, tougher, and more impressive (in Champions terms, his STR, PD, ED, and Presence get boosted evenly). His role is to take on opposing Bricks, take their best shot, and perform a Presence attack (Intimidation, usually, although it can be used for inspiration, or perhaps even seduction) to try to get them to surrender. If that doesn't work... well, he can give as good as he gets, and deliver piledriver blows of his own. His weakness is that he's fairly vulnerable to energy-based attacks, and has no defenses against mental attacks.
His name is a pun based on superhero gaming conventions - a brickbat is a mason's tool for knocking bricks into place.
Kitty Nine-Tales - A nimble little minx, Kitty Nine-Tales is all agility, claws, and her signature whip. She first appeared on the scene looking like any other hero, but her luck ran out - an enemy Blaster ended up putting an overcharged plasma bolt square through her chest, killing her instantly. A few days later, Kitty reappeared, seemingly none the worse for wear, but now sporting a pair of very real-looking cat-ears on top of her head.
Kitty's powers are superhuman agility, claws, and reincarnation. Every time she's killed, she reincarnates a few days later, looking a bit more feline with each successive death. She has a talent for melee combat, especially whips, using both a cat-o-nine-tails whip and a bullwhip. She could be written as a plucky C-class hero, or a B-class cat burglar villain.