Name – Bigon
Species – Android
Planet – Earth
Temperament – talkative
Appearances – Four To Doomsday

Bigon was a Greek philosopher from Athens kidnapped by the Urbankans, probably circa 519 BC. His memories were stored on silicon chips, and used to animate an android in his image. After the Doctor defeated Monarch, he and his fellow androids decided to look for another planet on which to settle.