Kerrigan
From Tardis Wiki, the free Doctor Who reference
Kerrigan was a survivor of the Grel invasion of Earth. He took Jason Kane before he was captured by the Grel. He explained to Jason how the Grel caused the humans to lose knowledge. He used Jason's simsuit to get into the Grel spacship to get to Bernice Summerfield. Arriving at the Grel base in Bedfordshire he knocked out his and Jason's best way into the Grel base. He was attacked by Davina when he tried to stop Benny's plan and was stunned. After he regained his memories, he remembered that Davina was his mother. (AUDIO: The Grel Invasion of Earth)
