Submitted by whitepangolin t3_1143xur in movies
I think we've seen a fair share of cool instances where actors return after their character died - whether that's a new Terminator in T2, the past Spider-Man villains returning in No Way Home, or Quaritch in Avatar 2.
What are some of the worst instances? "Somehow, Palpatine has returned" in Star Wars: Rise of Skywalker comes to mind.