Phalanx is the only known survivor of an ancient civilization, known as the Guardians. His past is largely unknown, and his motives not always clear. It is known that he tends to fight whatever he views as unjust, and is a strong supporter of freedom in the galaxy. Due to injuries sustained at some point in his past, he can never leave his trademark power suit. Phalanx generally plays a side role in RPGs, but in the 4th Sith War (Alternate Timeline B), he was one of the founding members of the reborn Galactic Republic.