Unicron

Unicron is the eternal arch-enemy of his twin brother Primus. He is known as the Dark God, the Destroyer, the Chaos Bringer, the Planet Eater, and he is dedicated to consuming the universe. His goal is to bring an end to the annoying creation boasting independence around him, and find peace by becoming the living center of a swirling, infinite torrent of nothingness at the end of all things. To undertake this seemingly overwhelming task, Unicron is able to travel across realities at will, a meandering plague upon existence itself. Integrated into his systems are incomprehensible quantum computers which calculate probabilities forward and backwards in time, in perpetuity, giving his processors an ever changing and evolving map of the multiverse.

The only thing that he fears is Primus' essence, contained inside the Matrix.

Frequently, Unicron will make deals with lesser beings, giving them vast new powers in exchange for their servitude. These minions are sometimes stripped entirely of their free will, but others follow him willingly. Service to Unicron, however, is a double edged sword, for it causes insanity and loss of self. And in the end, no matter their intent, Unicron's plans ultimately call for their consumption as well.

Unicron Serves as a Main Antagonist, and Appears in Heroes Alliance Forever, The Universe XP Kingdom Hearts Anime Series, and The Kingdom Hearts: The Chipmunks and Chipettes Series.

Construction
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Exists Of Unicron
After Ending Of Transformers Unicron Trilogy, Unicron Appears In A Movie. Thus, Decepticons Reveals On Optimus Prime. Until It's Free, Onto Universe. As He Existed that He Was an Eternal Arch Enemy Of Primus. this will Succeeds them on How Unicron Works.

Transformers The Movie
In the year 2005, Unicron made his most famous attack upon Cybertron. While heading towards the planet, he consumed the small world of Lithone, making it perfectly clear how great of a threat he was to the entire universe. As he continued on his way, Unicron's powers allowed him to become aware of the death of Optimus Prime, who handed the Matrix of Leadership to Ultra Magnus just before dying, which angered him tremendously. He then came upon the bodies of several wounded and dying Decepticons, who had been dumped into space following a recent battle on Earth. He extended a proposition to the Decepticons' leader, Megatron, offering to rebuild his body and those of his troops in exchange for their destruction of the Autobot Matrix of Leadership. Tortured into accepting, Megatron was transformed into Galvatron, and his followers became Cyclonus, Scourge, and the Sweeps.

While Galvatron set about reclaiming leadership of the Decepticons, Unicron arrived at Cybertron, and proceeded to consume the planet's two moons. Outraged that Unicron would do this to a planet that he viewed as his, Galvatron found himself the victim of mental torture by his creator, and ordered to Earth to complete the task given him. The ensuing chase finally climaxed in a showdown on the planet of Junk, where Galvatron seized the Matrix and returned to Unicron, only to reveal that he intended to use the talisman to make Unicron his slave. Amused by his pawn's arrogance, Unicron transformed into his gigantic robot mode and ate Galvatron. Unicron then tore into Cybertron, as Shockwave and the rest of the Decepticons on the planet fought back, to little effect. Unicron swallowed many spaceships, and one, which contained the young Autobot Hot Rod and his comrades, crashed through Unicron's eye. Hot Rod and Galvatron battled deep inside Unicron, and ultimately, Hot Rod was able to retake the Matrix from the Decepticon. Transformed by its power into Rodimus Prime, he defeated Galvatron and opened the Matrix inside Unicron, destroying his body from within.

Unicron's head was blown clear during his death throes, and became caught in Cybertron's gravity, turning it into a new moon for the planet — a grisly testament to the satellites he had destroyed.

Universe XP kingdom hearts: The Motion Picture
After the Traverse Town's Siege, Sora was stranded in Districts that the eerie spirits emerges, The Darkness Walls Opens into Unicron, Sora Chased Away.

Kingdom Hearts: Chipmunks and Chipettes: A New Legend
Unicron Serves as a Main Antagonist, Who Appeared in Disney's the Chipmunks and Chipettes. Unicron Holds to Unlock the Kingdom Hearts to Capture Britanny Miller-Jamal and its Princesses. It appears as A Boss in its Final Battle of Endor Event. Unicron Orders to Maleficent and its Decepticons To Stop the Heroes. Imperial and Sith Units Can Look onto the Allspark to Power up to Unlock the Kingdom Hearts.

With He Was Ordered the Droid Units, Sith Units, Imperial Units, and Evil Enemies Over the Path. Unicron's Ships Attacking the Twilight Town to Kills all The Characters.

Universe XP Kingdom hearts II
When Unicron transforms into World of Dark City, He Summons the Decepticon Dreadnoughts to Start The Invasion. He is ordered the battle the Worlds Under the Command of Tripod Leader.

At the end of Showdown in World of Dark City / Invasion of Nevada, the tripod leader, and the decepticons were defeated and possibly driven to extinction thanks to the creation of a light which temporarily deactivating the enemy ship's shields, followed by a devastating nuclear attack on their orbiting dreadnought.

Season 3
In Megatron and The Invention, Unicron Appeared When Snaptrap Appeares in it.

Universe XP Kingdom hearts IV
Unicron Singularity Emerges from the Darkness, the Galactic Villains and Galactic Heroes prepared for a showdown, Unicron used all of the power of the Black hole to unleash a terrible doomsday, which created a Singularity between the multiple fleets. And the wind from the storm evened the balance for the Pearl and caused Davy Jones to let out a roar of anguish as he realized what the black hole signified.

The Final Battle Of Unicron's Maelstrom that followed sealed the World of Dark Alliance Captain Davy Jones' fate, as Sora stab Jones' disembodied heart.

Near the End, Kruge, Tripod Leader, and Dark Oak that has Survived the Singularity, and Beckett that Begins the last battle, Unicron again Emerges from the Darkness, The RMS Titanic, and Olympic, and Some Heroic Fleet Together to Light our Darkest Hour, Destroying Unicron.

Season 1
Unicron Arrives to the Galactic Kingdom, When Decepticons Came to Attack the Heroes as Well.