Bombu is an alien from an immortal (or unimaginably long lived) race.

He made earthfall long ages ago in the Amazon jungle. His mission was to gather intelligence for a future invasion of the Earth. To disguise himself, Bombu took over a native village and became its "witch doctor".

When a plane crash deposited two outsiders into his village Bombu demonstrated his magical powers, and later "conjured" a storm. Ironically, Bombu died by being struck dead with a lightning bolt from his own storm.

The two men then discovered that the “tribal mask” Bombu wore was actually... HIS REAL FACE!

Bombu's magic was undoubtedly the result of technology so advanced as to be indistinguishable from "magic".