Who do you think are the all time smartest heroes and villains? Not powers, just intelligence.
My guess on heroes would be Xavier and Batman and Tony Stark just because they're so smart! No one ever fools Batman and Xavier is smarter than most of his opponents because he can read their minds, and Tony was smart enough to invent his own suit.
For villains, I would say and The Brain (from Teen Titans), Trigon, and Hugo Strange. The Brain was ALMOST able to take down all of the Teen Titans, Trigon is an omniscient demon, and Hugo Strange is one of the few people who was able to deduce Batman's identity.
Who do you guys think are the smartest? And give your reasons please.