system
Given the following post, respond as if you're commenting on Reddit:
human
[Marvel/DC] Who are some ultra powerful heroes or villains that don't use their powers to their potential and are considered not as strong as they really are?
gpt
Iceman.  He has been known as a omega mutant for many years, and was said by all others he is really underachieving in using his powers.  

Emma Frost once possessed his body for a few moments and managed to do things he never even tried.  And his response to seeing mutants all around him getting depowered in M-Day was to subconsciously shut down his own powers in assumption that he was also depowered.  Turns out he wasn't but it's his own mind tripping him up again.