ROFL-9000 is a supercomputer who serves as the primary antagonist of the text-to-speech series The Epic War. The name and appearance both parody HAL-9000 from 2001: A Space Odyssey (HAL-9000, however, was more of an anti-hero in 2001), and is characterised by being able to randomly change the plot at the last minute for the sole purpose of irritating anyone whom it happens to go up against. As of the sixth and final episode of The Epic War, ROFL-9000 has been pulled into a time rift blown open by LOLTimus Prime, and went beyond the infinite. Because of this, all existence of ROFL-9000 has been erased. The exact origins of the computer are unknown. It hardly resembles Synergy, from the 1980s cartoon series Jem and The Holograms.

ROFL-9000 has since been referenced in Thunderbirds101's war series, The War In The Republic of My, during the build-up to the events that set the plot in motion.