Unicron is a fictional villain from the Transformers media franchise. Designed by Floro Dery, he was introduced in the 1986 animated film The Transformers: The Movie and has since reappeared in Transformers: Armada, Transformers: Energon, Transformers: Cybertron, Transformers: Prime, Transformers: The Last Knight and Atari's 2004 Transformers video game. Unicron is a prodigiously large robot whose scale reaches planetary proportions, and he is also able to transform into a giant planet. Unicron's origin has expanded over the years from simply being a large robot to being a god of chaos who devours realities. He often employs the help of Decepticons in his work, and in some stories is considered part of the origin of the Decepticon forces. Fictional character biography According to the Transformers lore, before the dawn of time, Order and Chaos exist within an extra-dimensional entity known as The One. To explore the fledgling universe, he creates the astral being known as Unicron, and then subdivides him, creating his twin, Primus. Physical dimensions Unicron's size is never specified in any canon materials, aside from the vague term "planet size". In The Transformers: The Movie, Unicron's height appears to be anywhere from several kilometers (as when handling Galvatron) to several hundred kilometers (as when attacking and destroying Lithone and Cybertron's moons, and attacking Cybertron). A planet-mode diameter of has been suggested and robot-mode dimensions can follow from that estimate, provided that there is no change in size (compression or expansion) common among so many Transformers. One scene in the movie shows Jazz driving out of one of Unicron's eyes, just small enough to fit through them, though in another scene the Quintesson ship Hot Rod arrived in is tiny compared with the eye. Unicron is also small enough to stand on Cybertron's surface. Animated series The Transformers The character Unicron first appears in the opening scene of 1986's The Transformers: The Movie, immediately making clear his goal by consuming the small world of Lithone. Subsequently, when the Decepticons Megatron, Skywarp, Thundercracker, and the Insecticons are set adrift in space and left to die following a furious battle with the Autobots, Unicron appears before them and offers Megatron a deal: in exchange for a new body, and new troops, Megatron will destroy the Autobot Matrix of Leadership, the only thing that can stand in Unicron's way. Thus, Unicron rebuilds Megatron into a new and more powerful body and rechristens him