The world of Cybertron is the home planet of all Cybertronians, both Autobots and Decepticons alike. It is also the source of Energon. Earth and Cybertron share a lot in common: Cybertron has Primus as its core, while Earth has Unicron as its core.
The Birth of Cybertron
In the beginning there were two deities, named Unicron and Primus. Unicron is the incarnate of destruction and his twin brother Primus is the incarnate of making life. For millenea they were in a battle between who stands, and who falls. Primus created the 13 original Primes and defeated Unicron, leaving his unconscious body out to space. After they defeated Unicron, Primus made himself the planet Cybertron, with his own body being the core or the spark inside the planet.
The Golden Age
This was the era of peace, most of its history is currently unknown. It was where Optimus Prime was only Orion Pax, and Megatron was Megatronus. Orion was only a clerk in the Iacon Hall of Records . Megatronus was a gladiator that fought the toughest of competitors and creatures. One day Megatronus demanded to be the next prime to the Autobot High Council, and said Cybertron needed him. Orion gave reason to be the next prime and simply asked. The Council was amazed by Orion's words and gave him the Matrix of Leadership, making him truly the next prime. The outraged Megatronus severed all ties with Orion and created an army, with the assistance of Soundwave, called the Decepticons. Optimus made an army called the Autobots which fought them to bring peace to Cybertron. Thus beginning the Great War.
The Great War
This was the time where the Autobots and Decepticons fought each other. It lasted for many years, with millions of deaths. Not much is known, other than the Cybonic plague and Cybertron becoming a wasteland. Some events that happened was when Megatron ripped out Bumblebee's voice box. Or Airachnid interrogating Arcee, which ended up in the death of Tail Gate.
The Great Exodus
It was when the war became so intense Cybertron became uninhabitable. Making both Autobots and Decepticons find a new home. Some Autobots, like Smokescreen, may be in stasis or off in another galaxy. It was also revealed that some time during the war, Optimus Prime had hidden away the Allspark , in order to protect it from Megatron's forces .
The Decepticons rebuilt the Omega Lock on the Nemesis. Before they could use it, the ship fell under Autobot command and the limited cyber matter was used to restore Cybertron's core which restored it to a habitable status. However, Cybertron was incapable of creating new life without the Allspark. With the defeat of Unicron and Optimus Prime's sacrifice, the Allspark was restored to the planet's core. The Autobots gazed as the Sparks flew from the Well, including Optimus Prime's spark.
- Darkness Rising, Part 1 (Flashback Appearence)
- Darkness Rising Part 2 (Mentioned Only)
- Darkness Rising Part 3 (Mentioned Only)
- Masters and Students (Mentioned Only)
- Con Job (Mentioned Only)
- Sick Mind (Megatron's Mind)
- One Shall Rise, Part 1 (Flashback)
- One Shall Rise, Part 3 (Flashback)
- Orion Pax, Part 1 (Nemesis Screen)
- Orion Pax, Part 2
- Orion Pax, Part 3
- Operation: Bumblebee, Part 1 (Flashback)
- Crossfire (Mentioned only)
- Toxicity (Flashback)
- Out of the Past (Flashback)
- New Recruit (Flashback)
- Inside Job (Starscream's Mind)
- Darkest Hour
- Darkmount, NV
- Project Predacon (episode) (Flashback)
- Persuasion (Nemesis Screen)
- Predacons Rising (Fully restored in the end)