Fictional chancellors

Sheev Palpatine ( ) is the main antagonist of the Star Wars franchise. He first appeared in the 1980 film The Empire Strikes Back as . He is also known by his Sith name, Darth Sidious, which was first used in the novelization of the 1999 film The Phantom Menace.

Worf, son of Mogh (, Vorf Mohavič Raženka) is a fictional character in the Star Trek franchise, portrayed by actor Michael Dorn. He appears in the television series Star Trek: The Next Generation (TNG), seasons four through seven of Star Trek: Deep Space Nine (DS9), and the third and final season of Star Trek: Picard, as well as the feature films Star Trek Generations (1994), Star Trek: First Contact (1996), Star Trek: Insurrection (1998), and Star Trek: Nemesis (2002).

Star Wars character

'''Gowron, son of M'Rel', is a fictional character who appeared in the American science fiction television series Star Trek: The Next Generation and Star Trek: Deep Space Nine''. Portrayed by Robert O'Reilly, he is the leader (Chancellor) of the Klingon Empire. O'Reilly had appeared earlier in The Next Generation as Scarface in the second season episode "Manhunt", and was cast as Gowron due to his comedic ability and his piercing and extremely unsettling gaze, or what O'Reilly himself humorously referred to as "that crazy loon eyeball thing".

Martok, son of Urthog is a recurring character in Star Trek: Deep Space Nine, played by actor J. G. Hertzler. Martok is a high-ranking Klingon leader at the Federation-Bajoran space station in the late 2300s. Martok figures prominently in many of the show's long running story arcs, and also is an important relationship for Worf.