Tomar was a Kelvan, member of an expedition from the Kelvan Empire in the radiation-imperiled Andromeda Galaxy. His ancestors were part of a wave of multi-generational starships dispatched to nearby galaxies to find new territories for the Empire to conquer and occupy. Reaching the Milky Way Galaxy after centuries in the intergalactic void, his ship was destroyed crossing the galactic barrier. Under Rojan's command, Tomar escaped with three other crew members in a life-craft to a Class M planet. The Kelvans adopted humanoid forms more compatible with the new region's intelligent life and available transportation.