Beast Era timeline

The article includes Beast Wars, Beast Machines Dreamwave, 3H Productions, and Fun Publications' issue as main contents.

For events from Beast Wars II and Beast Wars Neo, see Generation 1 cartoon timeline (Japan).

For events from IDW Publishing's issue, see Beast Wars timeline (IDW).

Four million years ago

 * The resources on Planet Cybertron dried up due to the long-term war. An Autobot space exploration team aboard the Ark led by Optimus Prime left the planet Cybertron. While Megatron led a crew of Decepticons aboard the Nemesis and chased the Ark. Both Ark and Nemesis crashed on Earth due to being pulled in by the planet's gravity. The Transformers enter a long period of stasis lock due to the impact.

Three million years ago

 * Maximals and Predacons come from the future via Transwarp and scan the animals of the planet in order to transform into them. The Beast Wars begin.


 * The immortal life force of Starscream, who died in the future of 2005, crosses time and space to reach Earth. He possesses a Predacon and attempts to take over, but fails. He returns to being a ghost and vanishes into the far reaches of time and space.


 * Due to the Maximals' and Predacons' interference in the Vok experiment on Earth, the Vok begin to terraform the planet. Optimus Primal sacrifices his life to stop this. As a result, Earth loses its second, mechanical moon, and the Quantum Surge is generated.


 * Humanity's ancestors are born.


 * Ravage is sent from the future to kill everyone. He captures the Predacon Megatron, but fails in his mission and is destroyed by Rattrap's sabotage.


 * In the volcano later to be known as Mount St. Hilary, the Predacon Megatron unearths the Ark and attacks Optimus Prime in an attempt to change history. As a result, a Time Storm occurs, but Optimus Primal stops it.


 * The Maximals capture the Predacon Megatron and return to the future.

Approximately 300 to 500 years after the Great War

 * The long war ends with victory by the Autobots, and the Decepticons sign a cease-fire.


 * The Pax Cybertronia is signed.


 * There are two kinds of the Protoform Transformers appear on Planet Cybertron: Maximals and Predacons.


 * Maximals create a Transformer base on Starscream, who has an indestructible spark. They try to use him as an immortal warrior, but fail. This "Protoform X" massacres Colony Omicron and is captured 4 years later.


 * Megatron steals the Golden Disk, which the Maximals have been safeguarding. With his underlings, he travels to the prehistory Earth. Optimus Primal and his crew, who have been engaged in deep-space exploration with the captured Protoform X aboard their ship, are assigned to chase down Megatron. Colony Omicron's former chief of security, Depth Charge, follows in pursuit of Protoform X.


 * The Predacon Tripredacus Council view Megatron's independent actions as dangerous, and send Ravage travel back into the past to assassinate all Maximals and Predacons involved with the Beast Wars. Their plan ends in failure.


 * While Optimus Primal returns to Cybertron with the captured Megatron, Megatron escapes into an earlier period and uses a virus bomb to conquer the planet before Primal and his crew's return to the planet.


 * Primal and his crew are affected by the virus bomb and lose their memories and ability to transform, but through the guidance of Oracle, they are reformatted into new bodies. It is revealed that Primal was sent into the past to bring organic beast bodies back to Cybertron as part of Oracle's plan. Primal takes Megatron with him as he throws himself into the core of Cybertron, a fountain of organic energy. They die. The captured sparks are all freed, and Cybertron is reformatted into a verdant world with a balance of organic and machine.

After the events in Beast Machines

 * Optimus Primal is reborn by the power of Primus.