Ben Jackson

Companion of the First and Second Doctors, and a young merchant sailor.  He and Polly Wright helped the First Doctor against WOTAN.  Afterwards, they followed him into the TARDIS, and helped him fight 17th-century smugglers and the cybermen.  They watched the First Doctor regenerate.  Ben and Polly then aided the second Doctor against the Daleks, the cybermen, Professor Zaroff, and the Macra.   They first met Jamie in Scottland in 1748.  Finally after defeating the Chameleons, they discovered they were back in London on the same day as they left, and chose to remain there.