Teridax (SMU)

Teridax (SMU) is a Great Being from the Shattered Mirror Universe. When Naju hijacked the Enterprise in an attempt to reach Atlantis, Teridax was among the Great Beings who tried to stop him. He came through the Shattered Mirror and ordered Naju to return. Naju responded to this by shooting him and vanishing. Teridax's fate after that is unknown.