Complex sentence: The Mutant X universe plays with the fact that many regular heroes where Mr. Fantastic, Captain America or Professor X are reimagined as villains and vice versa villain Doctor Doom is heroic in this universe.
Split into simpler sentences: The Mutant X universe reimagines many regular heroes such as Mr. Fantastic, Captain America or Professor X as villains. Conversely, the villain Doctor Doom is heroic in this universe.