Unicron

Unicron

Unicron as depicted in IDW Publishing.
None/Decepticon
Information
Function	Bringer of Chaos (Fun Publications)
Partner	Cyclonus, Dead End, The Fallen, Galvatron, The Liege Maximo, Lockdown, Nemesis Prime, Nightstick, Scourge, Sideways, Starscream, The Sweeps, and Thunderwing.
Motto	"That which does not become a part of the one, shall become one with the void." "Even in outer space, the darkness becomes a part of you." (Superlink) "Until all is undone." I am Unicron.(Fun Publications)
Alternate modes	Planet, Tank
Series	Transformers: Armada Transformers: Energon Transformers: Cybertron Transformers: Titanium Transformers: Universe Transformers: Prime
English voice actor	Orson Welles (1986 film) Roger C. Carmel (animated series) Blu Mankuma (Beast Wars) Mark Acheson (Armada & Energon) Matthew Yang King (Transformers video game) John Noble (Prime)
Japanese voice actor	Mizuho Suzuki (Movie) Tetsuo Komura (Beast Wars Neo) Katsumi Chō (Micron Legend) Nobutoshi Canna (Super Link)

Unicron is a fictional character from the Transformers universe and toyline. Created 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, 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 mechanical 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.

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. Both brothers are multiversal singularities, unique in all realities, but whereas Unicron can only exist in one universe at a time, moving freely between them at will, Primus exists simultaneously in all realities at once. It is suggested that the two brothers embody the basic concepts of reality—good and evil, order and chaos—and that their continued existence is necessary for the stability of the storyline multiverse itself.

Another tale, from the Gen 1 cartoon T.V. series, season 3 episode 26 "Call of the Primitives".The evil genius known as Primacron creates primitive robots and then creates the most destructive robot named Unicron. Unicron later somehow becomes free from Primacon control and sets out to destroy everything in its path and to destroy the Matrix. To avoid another mishap, Primacon creates Tornadron, a cloud-like entity who would destroy every Transformer and whatever else gets in his way.