Jamie McCrimmon

(“Wee little”) Jamie McCrimmon was a Highlander brought along for the ride of a lifetime in the TARDIS. He travelled alongside Polly and Ben at first. Together, they comprised the trio that we referred to as “PB&J” on the podcast. After they left, however, Jamie continued his travels with the Doc, and thus became the longest-running ClassicWho companion.
Podcast C032 The Underwater Menace > > > > >

The lost city of Atlantis, fish people, and a mad scientist who ISN’T The Doctor
Podcast C031 The Highlanders > > > >

The Doctor pretends to be German, disguises himself as an old lady and commits fraud in soon-to-be-a-companion Jamie’s first ever serial