- For further reading on Ra Moon outside of the "Worlds Collide" crossover, check out Mega Man Knowledgebase.
Ra Moon was a mysterious supercomputer located in the Lanfront Ruins on Earth in the Year 20XX. It was discovered by Dr. Wily when the scientist went to hide out there after his previous defeat at the hands of Mega Man.
Having discovered it some time previously, Wily had commanded Ra Moon to modify a Met for him to give it a rice cooker function, which Ra Moon was refusing to do, when Flash Man entered with the blue Chaos Emerald. Sensing its power, Ra Moon offered to "process" the gemstone for Wily, but was blown off. After Wily managed to contact Dr. Eggman and create the Skull Egg Zone, Ra Moon was amongst the resources utilized by the two doctors to create the Wily Egg. Like the rest of Earth's inhabitants, it was caught up in the effects of the second Genesis Wave, the effects of which fused the planets past and future. (MM: #24)
In this timeline, Wily had recieved memories of everything that would happen to him in the future (or from this perspective, everything that had happened to him in the past). Amoung these memories was the fact that Ra Moon eventually grew out of control and turned against him, which Dr. Light briefly reminded him of. (StH: #250)
After their reality was restored to normal by Super Mega Man, its inhabitants returned with little to no memory of what they had just experienced, meaning that Wily's prior knoweledge of Ra Moon's betrayal had vanished. Sure enough, soon after, Ra Moon attempted to take over the world, but was thwarted in its ambitions by Mega Man and destroyed. (MMA)
- Ra Moon is the primary antagonist of the Japan-exclusive Mega Man game Super Adventure Rockman. The Archie Mega Man comic series was in the process of leading up to their adaptation of the game when the "Worlds Collide" crossover began, with the adaptation finally beginning in the very next issue after the crossover had concluded.