Let's get over to the positive side of the spectrum in the world of comic books. David Alleyne, also known as Prodigy, was always smart, but when he started to enter puberty he suddenly found himself a lot smarter. David's ability was to absorb knowledge and skill from the people around him, always making him the smartest guy in the room. The brainpower faded when he moved out of their radius, which was probably for the best. He was depowered after M-Day, but can now access some of that knowledge again, which is awesome.