Torin was a Klingon Guardian in the 24th century and member of the Followers of Kahless.

In 2369, he participated in the creation of a clone of Kahless. When he "appeared" he helped to verify his story in the temple. Torin and Koroth later briefed the clone on the current political situation and tried to convince him to take over the Klingon Empire. When Worf challenged them on Kahless' status, he helped to explain what they did. (TNG: "Rightful Heir")

Torin was played by Norman Snow.
His name comes from the script.
Torin gave the Kahless clone his memory of appearing to Worf when Worf told him of it when he arrived at Boreth, according to a script draft. [1]