User blog comment:Raised By Wolves/Total Dramarama Review – Episode 1: Venthalla/@comment-36109570-20180730143951/@comment-24952355-20180730161004

In the ending credits you can see which VA came back to voice their character again.

15 voice actors are listed in the ending credits, but only 13 were seen in the intro. 2 Characters might still appear in the later episodes, the only question is who are they.