Eric Savin

Eric Savin (along with Brandt, who essentially falls into the same entry here) was a supporting villain in Iron Man 3. Given how terrible the main villain was, it doesn’t take a genius to work out that means he wasn’t great.

More than anything else, he was just unnecessary – and he spoiled what could have been a big reveal of his boss’s powers at the end of the movie by displaying them near the start.

He was, of course, Extremis-powered, but his comic book namesake – who also goes by the name Coldblood – was actually a cyborg with great combat skills and a much more interesting character. It seemed weird to use that character’s name for someone so drab.

That takes us to our final entry on this list, the absolute biggest misstep by Marvel Studios in terms of its franchise’s villains.