Eternium was one of the rarest and most powerful substances on the planet Eternia. The rock-like Eternium was used to power many things on the planet. A single fist-sized pices could power the Royal Palace of Eternos for many years. However, the substance was almost impossible to find. When Trap Jaw consumed some Eternium, he acquired power equal to He-Man for a brief time, but it's effect faded after a while. The substance is poisonous to none-magical beings.
Appearances[]
He-Man and the Masters of the Universe (1983)[]
Season One (1983)
Season Two (1984-1985)