20 Worst Performances In Superhero Movies

1. Uma Thurman (Poison Ivy) - Batman & Robin

And finally, we have the crowning achievement of awfulness in comic book movies, the legendarily terrible turn by Uma Thurman as Poison Ivy.

Thurman clearly attempted to lean into the campiness of the movie while still retaining Ivy's sex appeal, yet she dialled it up way too far, to the point that her goofy accent and over-the-top mannerisms almost completely drained away any potential sexiness.

In a movie that could very well stage its own Hammy Acting Olympics, Thurman outdoes everyone and makes it impossible to take her villain seriously as a threat to the dynamic duo.

Granted, pretty much everything in this movie was a bonkers bust, but nothing came close to Thurman's jaw-droppingly bad work, and yet Silverstone somehow stole the Worst Supporting Actress Razzie out of her grasp. In a word, diabolical.

What are your most-loathed performances in superhero movies? Shout them out in the comments!