Name – Senex
Species – Dulcian
Planet – Dulkis
Temperament – set in his ways
Appearances – The Dominators

Director Senex was leader of Dulkis and Cully's father. He was dismissive at first of the possibollity of a violent invader, believing that their pacifist stance would mean that no other race would bother them. Eventually, in the face of the evidence he took the Doctor's side when he urged action against the Dominators.