James Wesley Marsters portrayed Victor Stein and Magistrate in Runaways. He also portrayed Victor Stein's Healing Algorithm version in the episodes Smoke and Mirrors and The Great Escape and Xavin disguised as Stein in the episode Rite of Thunder.
- James Marsters also voiced Sergei in Spider-Man: The New Animated Series.
- James Marsters also voiced Korvac and Chitauri #3 in Ultimate Spider-Man.
- James Marsters also voiced Reed Richards/Mister Fantastic in The Super Hero Squad Show.
- James Marsters is one of the actors to portray characters for both Marvel Television and DC Entertainment. He portrayed Brainiac in Smallville and voiced Lex Luthor in Superman: Doomsday and DC Universe Online.
- James Marsters shares his birthday with Ben Barnes.