Simon Reeger

Starfleet admiral and Klingon War hero

A celebrated Klingon War admiral who seized the Enterprise to destroy a cloaked ship and was relieved of command after his obsession endangered thousands.

Admiral Simon Reeger, played by Joe Morton, takes command of the Enterprise in Orders of Magnitude while Christopher Pike's landing party is out of contact. He is a hero of the Klingon War, celebrated for commanding the USS Constitution against three Klingon ships during the evacuation of a medical facility.
The truth is less heroic. Reeger was injured and George Kirk, his first officer, actually won the battle, but Reeger kept the credit and repeatedly reassigned George. Joseph M'Benga also served under him on the Constitution.
Reeger pursues a cloaked ship that killed millions, including his family, and orders the destruction of a planet with 5,000 inhabitants. James Kirk resists, secretly drugs him, and goads him into irrational behavior until M'Benga relieves him.