|First Appearance||The Galactic Enforcers|
It was stored in a secure facility until it was stolen by Vulkanus and Sixsix while being transported. When combined with the Bicenthium Alloy (the alien name for iron ore), it creates an explosive which is powerful enough to obliterate an entire solar system. Element X is useless by itself, however.
According to Synaptak, Element X and Bicenthium alloy can only be bound together with an enormous amount of heat.
- The Galactic Enforcers (first appearance)