Bret Vyon

Bret Vyon was a Space Security Agent who assisted the First Doctor in his quest to stop the Daleks from conquering the Solar System in 4000.

Early life
Bret was born in Mars Colony 16 in the late 40th century.

Service
In 3990, he joined the Service, made First Rank in 3995 and Second Rank in 3998. His sister, Sara Kingdom, would also join the Service.

Fight against the Daleks
He was posted on a mission to Kembel in 4000 with another agent, Kert Gantry, to investigate suspicious activity by Mavic Chen, Guardian of the Solar System. Suffering a similar fate to Marc Cory, Bret was saved when he met the Doctor, who had also discovered Cory's tape-recording. Bret learned that Chen had allied himself with the Daleks.

Bret stole Chen's Spar and took the Doctor, Steven Taylor, and Katarina with him in it to reach Earth in time to warn of Chen's plot. Chen had convinced Bret's sister, Sara Kingdom, that he was a traitor and she killed him. Once Sara learned the truth, she allied with the Doctor to save Earth and avenge his death. (DW: The Daleks' Master Plan)

Behind the scenes

 * Actor Nicholas Courtney would later go on to play the recurring role of the Brigadier.