Rota Sevrin is an antagonist who was introduced in the Star Trek episode "The Way to Eden".
He was portrayed by Skip Homeier, who had earlier played Melakon in the Star Trek episode "Patterns of Force".
Sevrin was a Tiburonian male. By the 2260s Sevrin was a renowned research scientist in the fields of acoustics, electronics, and communications. His work came to a halt when he was diagnosed with synthococcus novae, a deadly disease which greatly limited his ability to work and travel to environmentally controlled areas. This caused a mental break in Sevrin's mind and he began to hate technologically advanced society.
He developed the philosophical movement of the One, which sought the mythical planet Eden. Sevrin was dismissed from his post after starting the movement.
In 2269 Sevrin and some of his followers stole the space cruiser Aurora to search for Eden. They were prusued by the USS Enterprise. The Aurora was destroyed when the group overloaded the ship's engines trying to escape from the Enterprise.
Due to his follower Tongo Rad being the son of the Catullan ambassador Sevrin and the others were not arrested and thrown in the brig, but were instead treated as guests. Sevrin was later arrested when he resisted a medical exam.
Rad helped free Sevrin, who managed to get in to the auxillary control room and take control of the Enterprise. He set the ship on a course to what they thought was Eden, which happened to be in Romulan space. Upon arrival at Eden Sevrin attempted to kill the Enterprise crew by sending a hypersonic pulse through the intercom systems, but Kirk was able to deactivate the pulse.
Kirk, Spock, McCoy, and Chekov beamed down to find that the ground of Eden high acidic, and all the plants quite poisonous. They found the shuttle Sevrin and his followers took down to Eden. They found the badly burned Sevrin and his followers and prepared to take them back to the Enterprise. Refusing to leave Eden, Sevrin ran off and ate a piece of poisoned fruit, which killed him instantly.
Sevrin's mirror universe counterpart was a research scientist who served on the Terran Emperor's cabinet. It was noted that he bore a striking resemblance to fellow cabinet member Melakon, who served as Security Minister.