@Nacha: To be honest I went with the Fandom in this...

Nacha
2021-01-01T07:09:59-05:00

To be honest I went with the Fandom in this case, because I wasn't sure how he gets introduced. As Impostor or Imposter. I'm going to look how the anime and game calls him again to see which version is more correct.

The moment they find the file about the Ultimate Imposter in the EN game version. It's written as Imposter here.