Captain Koinelius Tunar

Captain Koinelius Tunar (voiced by Robin Atkin Downes) - A member of the Fishmen race who was driven to vengeful rage by the Ramlak stealing both his homeland and his leg, the latter he replaced with a metallic peg leg. He later took command of a ship and assembled a crew of Fishmen with the task of hunting the creature down, claiming actions were in the crew's best interest yet places killing the Ramlak at all costs before them. Encountering the Thundercats with the intent to make them into chum to attract his quarry, Tunar reconsiders once seeing them fight the Ramlak and makes them part of his crew while finding common ground with Lion-O, who is also out for revenge on Mumm-Ra. However, while Lion-O lets go of his revenge to save the Fishman's crew, Tunar became a victim of his own revenge as he is dragged into the Sand Sea while harpooning the Ramlak. Lion-O managed to avenge him by slaying the Ramlak.