Galactiac is a fusion of Marvel's Galactus and DC's Braniac - a nightmarish fusion of mind and machine this entity existed in the Amalgam Universe and became a formidable opponent of the Challengers Of The Fantastic when he decided to set his sights on Earth.

Galactiac travels the universe draining planets of energy to replenish his energy-cells and keeps a small piece of every planet he destroys in order to study it.