The 1995 TV series Dollhouse was written and directed by the same person as "Buffy the Vampire Slayer" and starred the actress that portrayed Karl Agathon.
 He has starred in TV series "Supernatural", Joss Whedon's "Dollhouse", and the Showtime time travel show, "Continuum". 
 He is the founder of Mutant Enemy Productions and co-founder of Bellwether Pictures, and is best known as the creator of the television series "Buffy the Vampire Slayer" (19972003), "Angel" (19992004), "Firefly" (2002), "Dollhouse" (200910) and "Agents of S.H.I.E.L.D." (from 2013). 
Karl C. Agathon (callsign "Helo") is a fictional character on the re-imagined "Battlestar Galactica" TV series, portrayed by Tahmoh Penikett. 
