Megazoids were a humanoid species from the Alpha or Beta Quadrant. By 2293, members of this species were serving on Starfleet vessels, including one Crewman Dax.

Megazoids had some distinctive facial features, though their most distinguishing characteristic was their large, unusually-shaped feet, which made it impossible for them to wear the same footwear as most humanoids. This species apparently did not have footwear of its own either, making their feet that much more noticeable. (Star Trek VI: The Undiscovered Country)