Koth was the Klingon warden of Rura Penthe in 23rd century. In 2233, Koth was the warden of Rura Penthe. In that year he took custody of the Romulan mining Captain, Nero, his crew and the Narada and set them to work in the mines. For the next 25 years, Koth and his guards brutally interogated and tortured Nero and his crew. (ST comic: "Nero")