American actor (1941–1992) who played Admiral Haden, Picard's superior during two tense border crises, in the Next Generation episodes The Defector and The Wounded.
John Hancock was an American character actor with a deep voice and commanding presence, seen in many films and television series of the 1970s and 1980s, including a recurring role as a judge in L.A. Law.
In The Next Generation he plays Admiral Haden, who speaks to Picard from Lya III. In the third-season episode The Defector he relays Starfleet's caution over the Romulan Jarok's story of a base at Nelvana III.
He returns in the fourth-season episode The Wounded, ordering Picard to stop Captain Maxwell's unauthorised attacks on Cardassian ships by any means and so preserve the new peace treaty.