Question: What producer do both "The Zeta Project" and "Batman Beyond" have in common?
Sentence (from "Batman Beyond: Return of the Joker"): As in the TV series, Will Friedle and Kevin Conroy star as Terry McGinnis and Bruce Wayne, respectively, and Mark Hamill, who voiced the Joker opposite Conroy in "Batman: The Animated Series" and "The New Batman Adventures", reprises his role.
Relevant evidence: No