Castile
Background
Castile is a mercenary terrorist. He has killed hostages in Stockholm and Frankfurt.
During the events of The Master: Season 1 Episode 4 Hostages played by David McCallum
Serena and Castile plan their hostage taking operation while Terrorist/Waiter and Terrorist/Waiter look on. At a garden party, suddenly a helicopter hovers overhead. Terrorist/Waiter, Terrorist/Waiter, Terrorist/Waiter, Terrorist/Waiter and some other Terrorist/Waiters pull out weapons and disarm the security. The helicopter lands as does another. A group of hostages are taken including Alicia Clayton, Senator Clayton, Second Hostage, Third Hostage and First Hostage. Clayton is able to escape, but the Terrorists leave with the other prisoners. The hostages are brought into a room and Castile calls the California State Building and Forbes answers the call and then calls Control over. Castile tells him that political prisoners must be released or the hostages will be killed. Mallory is spotted by Serena and Castile sneaking around and Serena catches Mallory. Castile tells Serena to start the executions while he taunts Mallory. John Peter McAllister saves Mallory and then knocks Castile unconscious.