Felt that Hamill's performance as Joker sounded weird in Crisis on Infinite Earths Part 3?
— Marcelo Millicay (@millicay95) August 12, 2024
Well, that's because it wasn't Mark Hamill.
The digital rental file of the movie has just been updated to include Mark Hamill's performance. pic.twitter.com/HuAAMUM2np
Really weird situation where the release of the animated film had the wrong voice actor or the recording wasn't finished. WB's has not released any info on why it came out with the wrong voice actor. Many fans noticed it didn't sound like Mark Hamill and WB's gave no info that it wasn't him upon release.