Siege of Massunstrad

The Siege of Massunstrad is an event from the Generation 1 continuity family.

The Siege of Massunstrad was a battle between the Autobots and Decepticons involving Optimus Prime, Megatron and an antimatter chamber. Any other details about the siege, such as which side was doing the besieging or where Massunstrad is located, are unknown.

Fiction

IDW comics continuity

Optimus Prime sustained major damage at the Siege of Massunstrad when he was trapped inside the antimatter chamber by Megatron. Chaos Theory Part 1