PLAYED BY: Larry Dobkin
SPECIES: Klingon Male

Gray-haired Klingon ambassador unmasked, in 2367, as a Romulan collaborator intent on dissolving the Klingon/Federation alliance by mind-controlling Geordi La Forge into killing a Klingon governor. Kell was arrested by the Klingons.

PLAYED BY: John Fleck
SPECIES: Romulan Male

Romulan officer and scientist who brainwashed Geordi La Forge, via his VISOR's interface, to assassinate a Klingon in a 2367 plot to wreck the Klingon-Federation alliance.
 

PLAYED BY: Edward Wiley
SPECIES: Klingon Male

Klingon governor of the Kriosian System. In 2367, the Kriosians rebelled when they were aided and prompted by the Romulans. Vagh, however, believed the crew of the U.S.S. Enterprise were inciting unrest. He was almost assassinated by La Forge under Romulan control as part of a plan to divide the Klingon and Federation alliance.