Tachyon

"Tachyon Dragon" (タキオン Takion) is an archetype of LIGHT monsters, which rival the monsters and are used by Misael in Yu-Gi-Oh! ZEXAL. A tachyon or tachyonic particle is a hypothetical particle that always moves faster than light, and most physicists believe they cannot exist because they are not consistent with the natural laws of physics. The word comes from the Greek word tachys, meaning "swift, quick, fast, rapid". This is a reference to the rivalry between Misael's "" and Kite Tenjo's "".