Source: cbr.com

5. Mr. Fantastic/The Maker

Ultimate Fantastic Four, Ultimate Comics: Doomsday Trilogy - Marvel Comics

The Ultimate Universe was kind of a neat experiment.

It set out to retell classic Marvel stories from a modern perspective. Spider-Man was pretty consistently awesome through the series, but others kind of floundered as they searched for direction. This included Ultimate Fantastic Four, who started off very strong, but then lost their way. So they threw a curve-ball.

In the Ultimate Comics: Doomsday Trilogy – individually titled Ultimate Enemy, Ultimate Mystery, and Ultimate Doom – several groups of Marvel heroes found themselves menaced by a mysterious threat. That threat turned out to originate with Ultimate Reed Richards, who had finally snapped and was making decisions "for the greater good". This devastated his relationship with Sue Storm, led her to get together with the Thing, and gave the ultimate universe a phenomenal big bad.

And then he crossed into the regular Marvel Universe"¦