Johann Helf: Johann Helf. Actor: Stargate: Atlantis. Johann Helf was born on 13 February 1972 in Kelowna, British Columbia, Canada. He is an actor, known for Stargate: Atlantis (2004), The Mark: Redemption (2013) and Zero Tolerance (2015).
Known For: Stargate: Atlantis (NabelNabel Golan), The Mark: Redemption (Warren), Zero Tolerance (Mekael), Flight from Hell (Ethan)