10 More Insane Reasons Actors Didn't Return For Sequels
9. T.J. Miller Hated Ryan Reynolds - Deadpool & Wolverine

Though T.J. Miller's Weasel didn't play a huge role in the first two Deadpool movies, his presence was certainly felt. Back when Wade Wilson was at his absolute lowest point, he still had Weasel as a friend, not quite a sidekick but a sounding board, and comic relief for the audience.
Deadpool & Wolverine naturally took Wade's story to a place where most of his supporting cast couldn't follow, but the majority were there at the beginning and the end, and served as his motivation throughout the entire story. It's a little weird that his oldest friend wasn't there along with the likes of Colossus, Negasonic Teenage Warhead, and even Buck (Stefan Kapicic, Brianna Hildebrand, and Randal Reeder).
Turns out that if you do an interview and basically say how awful Ryan Reynolds is as a person, you probably won't get invited back to another Deadpool movie. Who knew?
This is exactly what T.J. Miller did, as he spoke to EW and claimed that Reynolds treated him like dirt on the set, essentially belittling him for not being as funny or in as many films. Feel free to take these claims with as big a pinch of salt as you like, as Miller doesn't exactly have the best reputation in the business, and the complete 180 that he has taken on his stance with Reynolds since, while claiming he wants to return for Deadpool 4, seemingly speaks volumes.