Vince wins an odd little creature from Pidge's video game. Seemingly harmless at first, it quickly runs amok.
Plot Summary
Maahox creates a gremlin-like holographic pet, which he sends to attack the Castle of Lions through Pidge's videogame.
Vince, without Pidge's permition, finishes the game, beating the final boss. He downloads Maahox's prize-pet and names him "Gary". However, the seemingly harmless cute Gary soon causes chaos for the force by multiplying himself in order to destroy the castle's defenses. After being captured by Hunk's space mouse trap device, Gary escapes and grows into a monstrous version of himself as he attacks the Voltron Nexus.
Pidge finds a way to defeat Gary by re-rigging the mouse trap to make what he calls a "Gary Bomb" so the space mice can carry it inside the creature, but in the end, Gary's playing inside Voltron's inner workings has caused major damage.