Trevor Sigma

{{Infobox Individual
 * individual name= Trevor Sigma
 * race= Human
 * home planet= Earth
 * home era=
 * apperances= DW: The Happiness Patrol
 * actor= John Normington

Trevor was a citezen of Earth that came to Terra Alpha to invest thre planet but when he did he had to stay for 10 years. Trevor Sigma distracted Joseph C so The Doctor could talk to Helen A. Trevors name is Trevor but because he is from another planet he is called Trevor Sigma.