Helo is a Raptor pilot onboard the Battlestar Galactica, and an ideal soldier who is willing to sacrifice himself for the greater good.
As Boomer's co-pilot, they build a strong bond and trust in battle, but Helo gives up his seat back to the Battlestar in order to give it to Gaius Baltar, a renowned scientist.
Left behind on Cylon-invaded Caprica, he is surprised by an unexpected saviour in Sharon (Boomer) who helps him excape Cylon pursuers. They fall in love while on the run, and Sharon reveals she is pregnant, just as Helo discovers she is a Cylon.
Torn between his duty to protect the fleet and his enduring feelings for Sharon and their unborn child, Helo leads with his heart.
Tahmoh Penikett
Son of former Yukon premier Anthony David John Penikett (Tony). Tahmoh, his father, and his twin sisters Sarah and Stephanie make their home in Vancouver, British Columbia.
Tahmoh graduated from the Victoria Motion picture school and studied at the Lyric School of Acting in Vancouver. His acting credits include appearances on Cold Squad and Stargate SG-1.
Brother Cavil Dean Stockwell
Priest to the fleet, Brother Cavil is a Cylon agent with an avatar plated with the Caprica survivors.
Samuel Anders Michael Trucco
Leader of the resistance group on Caprica, Samuel T. Anders was also the captain of the professional Pyramid team. Sparks fly when he and Kara meet on Caprica.
D’Anna Biers Lucy Lawless
Fleet News Service reporter delivers all the dirt fit to print and broadcast. Unbeknownst to the fleet, she is a
Cylon Model Number Three - her primary reporting is to the cylons.
Tom Zarek Richard Hatch
A charismatic political prisoner and revolutionary who demands a Presidential election be held. Hatch played Captain Apollo in the
1978 version of Battlestar Galactica.
Leoben Conoy Callum Keith Rennie
The first Cylon humanoid model that Adama discovered on Ragnar. He is particularly good at sowing the seeds of dissent.
Lt. Gaeta
Alessandro Juliani
Tactical Officer Lieutenant Gaeta is the detail-oriented, young member of the Galactica crew who works closely with senior officers.
Crewman Specialist Cally
Nicky Cline
Young and tougher than she looks, Cally is loyal to her Senior officer, CPO Tyrol.