This article is about the event. You may be looking for episode.
Brain Attack (Event)
Brains Captured, Creatures return to their homelands.
Brain Attack is an event in which an unknown number of Brains were launched to several planets, where they took control of the planets' natives and made their way to Makuhero City.
After the events of Breakout, unknown villain to launch swarms of brains across the galaxy, which eventually made their way to Makuhero City where they attacked the local populace. Hero Factory's Alpha 1 Team was outfitted to properly combat the mutated swarms of brain-controlled creatures.