Michael Holt suits up for his first superhero outing in Mr. Terrific: Year One #3, but can the third-smartest man outsmart ...

Edi Gathegi, who became an instant fan-favorite in James Gunn's Superman as Mister Terrific, had to decide between being in that film or a Robert De Niro show.

James Gunn's Superman just nailed the super-smart hero Mister Terrific, but it smartly held back on debuting his most unique superpower.