Guest Stars James Mathis III voices T'Challa / The Black Panther Alex Désert voices Nick Fury Troy Baker voices Clay Quartermain Troy Baker voices Whirlwind Mark Hamill voices Ulysses Klaw Kevin Michael Richardson voices Man Ape Kevin Michael Richardson voices N'Gassi Danny Mann voices Mad Thinker Hakeem Kae-Kazim voices T'Chaka Troy Baker voices Grey Gargoyle Wally Wingert voices Elton