10 Actors Who Appeared In Star Trek AND Batman: The Animated Series

6. Matt Hagen/Clayface - Ron Perlman

Ron Perlman appeared as the tragic villain Matt Hagen, better known as Clayface, in Batman: The Animated Series. The character was introduced in Feat Of Clay, an early two-parter that demonstrated the series' ability to depict heightened reality alongside the absurd. 

Perlman returned to voice Clayface and would also voice other characters in the DCAU, including the New God Orion in the Justice League series.

Perlman's voice carried over into Star Trek (as did the rest of him) though the actor was hidden under a fair amount of rubber and latex. He played the Reman Viceroy in Star Trek: Nemesis, an imposing character based physically on Nosferatu, one who wasn't above a bit of mind-abuse. He also is currently the only character to know whether that chasm at the bottom of the Enterprise-E really is endless.