Prefect Tamar was a Kelvan military officer. In 2568, Tamar was dispatched by the Kelvan High Command to investigate Commander Rojan's activities in the Milky Way Galaxy. He had all 100 tentacles, which Rojan took as a sign that Tamar had never been in combat because any veteran soldier would have lost at least 5 or 10 tentacles. Tamar subsequently assumed a humanoid disguise, as Rojan insisted, since the world on which the Kelvans had settled would not sustain the native Kelvan form for long.