10. Jennifer Lawrence - Dark Phoenix
X-Men fans were thrilled when the on-the-rise Jennifer Lawrence was cast to play Mystique in X-Men: First Class, and though she did a fine job in her first time up to bat, that enthusiasm became less apparent with each subsequent sequel.
Lawrence's star profile soared when she starred in The Hunger Games the year after First Class, and another year later she won the Best Actress Oscar for her performance in Silver Linings Playbook.
Lawrence was game enough in 2014's X-Men: Days of Future Past, but by the time X-Men: Apocalypse rolled around two years later, it was clear she was only involved for a contractually obligated paycheck.
Due to Lawrence's disdain for the makeup process, she spends huge portions of Apocalypse looking like, well, Jennifer Lawrence, and despite Lawrence's clear desire to take the money and run, her fame meant that Fox wanted to give her a marquee role regardless of how little she wanted it.
This led to the recent franchise-ending Dark Phoenix, where a fully checked-out Lawrence sleepwalked her way through reams of admittedly atrocious dialogue, where she couldn't look more bored - or embarrassed.
Mercifully, Mystique is killed half-way through the movie after getting a relatively scant amount of screen time, but every second she's in the movie, you can sense her eagerness not to be involved.