We don't have a biography for Mark Collins yet. Hang in there, or go ahead and contribute one.
Appearances
Scorpion
Guest cast, played by Joshua Leonard
- Episode 1x05: Plutonium Is Forever (Oct 20, 2014)
- Episode 2x23: Chernobyl Intentions (Apr 18, 2016)
- Episode 2x24: Toby or Not Toby (Apr 25, 2016)
- Episode 3x04: Little Boy Lost (Oct 17, 2016)
- Episode 4x01: Extinction (Sep 25, 2017)
- Episode 4x02: More Extinction (Oct 2, 2017)