Unicron

Unicron is the overarching antagonist of the Transformers franchise. He is a giant cosmic Cybertronian god who serves as a multiversal singularity desiring to find peace by consuming and destroying all reality around him, as well as the twin brother and arch-nemesis of Primus, the creator of the Transformers.

Throughout animation, Unicron was voiced by the late Orson Welles in 1986's Transformers: The Movie and Roger C. Carmel in The Transformers Season 3, Mark Acheson in Transformers: Armada, David Kaye (possessing Megatron) in Transformers: Energon, and John Noble in Transformers: Prime.

Why He Rocks

 * 1) He is an extremely terrifying villain in his first appearance in Transformers: The Movie.
 * 2) He devours millions of planets and moons throughout the series, making him very intimidating.
 * 3) A well-written backstory found from the pages of Marvel Comics's Transformers.
 * 4) He has little chemistry towards Galvatron/Megatron in the movie with it's show and Optimus Prime in Prime.
 * 5) His goal to consume the entire universe and finding peace in outmost nothingness is very dark.
 * 6) He's one of the largest robots in Transformers history.
 * 7) His voice in the 1986 film with legendary film director and actor Orson Welles and in Transformers: Prime from Lord Of The Rings actor John Noble sounds very intimidating.
 * 8) Unicron is very manipulative by giving them unfair deals new powers and forms, but he consumes right in the way.
 * 9) His design is very unsettling and intimidating.
 * 10) Memorable lines like, "I am Unicron", "that does not become a part of the one, shall become one with the void", "Destiny… you cannot destroy… my destiny!!!"
 * 11) Iconic theme song in 80's standards.
 * 12) He reappear in others shows like the original G1 show, Beast Wars, Beast Wars Neo, Transformers Armada, Transformers Energon, and Transformers: Prime.
 * 13) He is one of the most darkest villains in cartoon history.

Bad Qualities

 * 1) While being a great villain, he could be way too unsettling for younger viewers.
 * 2) Him being the earth's core in Transformers Prime and Transformers: The Last Knight is kinda awkward.

Trivia

 * His first toy was originally going to be released in 1986, but that never happened.