"What's the matter? All I said was that Komaytos look like little Metr—" Non-canon warning: This article or section contains information that may not be considered an official part of the Metroid series in the overall storyline by Nintendo.
Suimar was an evil emperor who ruled the galaxy despotically. Generations ago, he built the maximum security prison on RX 338 to imprison all rebels who were against him. Suimar was later overthrown, with RX 338 later being used by the Galactic Federation to imprison highly dangerous criminals.