Axiom Nexus

Cybertron
The planet Cybertron, as portrayed on the 2007 film's website before the release of the film.
Universe	Transformers, Marvel Comics.
Planet type	Living planet.
Notable locations	Altihex • Axiom Nexus • Ankmor Park • Blaster City • Capitol City • Central City • Centurion • Corumkan • Crystal City • Cyber City • Cybertropolis • Gygax • Helex • Hexima State • Hive City • Iacon • Kalis • Kaon • Mebion • Metrotitan • Nova Cronum • Perihex • Polyhex • Praxus • Protihex • Proximax • Simfur • Slaughter City • Stanix • Tagan Heights • Tarn • Trypticon • Tyger Pax • Tyrest • Uraya • Vos • Yuss
Moon(s)	Moon Base 1 • Moon Base 2 • Unicron (Armada) • Unnamed Mini-Con inhabited moon
Continents	Hydrax Plateau
Oceans	Sea of Rust (restored to a city in Prime).
Notable races	Transformers
Notable people	Cybertronians, Autobots, Decepticons, Maximals, Predacons, Scraplets, Primes, Mini-Cons, Vehicons, Drillers, Malcontents, Combiners, Female Transformers, and Shifters.
Created by	Primus (Robot mode)
Genre	science fiction

Cybertron is a fictional planet, the homeworld of the Transformers in the various fictional incarnations of the metaseries and toyline by Hasbro. In the Japanese series, the planet is referred to as "Cybertron" (first shown on Japanese Galaxy Force packaging, although "Cybertron" is the Japanese name for "Autobot") pronounced as セイバートロン Seibātoron. Cybertron is populated by mechanical life forms of variable size who can transform into all kinds of machinery. These are called Cybertronians, or Transformers.

Iacon is the name of the largest city on Cybertron, in the various Transformers media. It is best known as the hometown of Optimus Prime and the Council of Autobot Elders. The city was protected by a great dome, and was the last city-state to fall to the Decepticons, after which the Autobot resistance moved into the tunnels and bases beneath its surface. Iacon appeared throughout the US and UK Transformers comic as the main base of the Autobot resistance on Cybertron.

"And There Shall Come... A Leader", a flashback story in the 1985 UK Annual, shows Iacon as home to the Autobot Council of Elders based in the Celestial Temples, who include Emirate Xaaron, High Councilor Traachon and Councilor Tommandi. The city itself is protected by a great dome, and is the last Autobot outpost to hold out against Megatron's advancing army of Decepticons. During the story, Prime’s troops destroy the main expressways into Iacon, halting the Decepticon advance.

In the 1986 UK Annual, another flashback story, "State Games", details pre-war Cybertron and the buildup to Megatron’s uprising. After the failure of a global ruling body known as the Overlords, Cybertron has been divided into various independent city-states, all of which are now facing overcrowding and a lack of resources. Iacon is the largest and wealthiest of these city-states, and the home of Optimus Prime. Inter-state gladiator matches increase the tension between Iacon and lesser city-states such as Tarn and Vos, and eventually a botched act of sabotage leads Tarn and Vos into civil war with each other. The survivors are united by Megatron, and blame Iacon for standing by and, falsely, starting the conflict in the first place.

In the Target: 2006 storyline (UK #66 to #88), Iacon is revealed to have been conquered by the Decepticons and its dome is a broken shell. Emirate Xaaron now leads the Autobot resistance movement from secret bases beneath Iacon’s surface.