Tahmoh Penikett

Tahmoh Penikett is a Canadian actor. He is known for playing Karl "Helo" Agathon on SyFy's 2004 television series Battlestar Galactica. He has appeared in TV series Supernatural, Dollhouse, and the Showcase time travel show, Continuum.

Man of Steel
The Last Victim
2 Hearts
Jonah
The Devil Has a Name
Trick 'r Treat
Killbird
Space Force: Battlefront

Supernatural
Dollhouse

Smallville · S3, E15

15. Resurrection

While Clark's father awaits surgery, a boy at the hospital straps a kryptonite bomb to himself and demands that Jonathan's liver go to his ailing brother.
Smallville · S6, E21

21. Prototype

A crooked senator threatens to expose Lex's DNA experiments on a military man; Clark tries to convince Lana to leave Lex.
Arrow · S1, E7

Muse Of Fire

Oliver meets a mysterious woman with dangerous secrets. Following an unfortunate turn of events, Tommy seeks Laurel's support.
Castle · S5, E1

After the Storm

Castle and Beckett are facing new questions, was this a one-time fling, or are they now a couple?
Smallville · S6, E19

19. Nemesis

A pipe bomb explodes in one of Lex's secret labs; the enraged spouse of a special-forces soldier takes Lex hostage, and Clark tries to rescue Lex.
Castle · S4, E23

Always

In the season finale, Castle struggles to keep Beckett safe as she hunts down the man who shot her.

Tahmoh Penikett

Movies

Shows

Guest Appearances