Mumu/Trivia


 * Although Mumu doesn't evolve into his until, the cover art depicts him as a Swampert along with 's Chic (which by then was already a ) the volume prior. This might be due to the fact that before being released in volume form, few to several rounds, even within the same chapter, may be left uncollected, and so the fans were expected to be aware of his evolution already, which happened mere chapters after the end of this volume. Alternatively, it may just be a result of the fact that Mumu and Chic were always seen in the same evolution stage when placed in a volume cover together, just as Exbo, , and Megaree were in the covers for the.
 * Mumu's Contest call is, "Regardless of the effects of time, the toughness that this body encompasses never changes. Boiling with raging Torrent, this is the Pokémon Swampert—Mumu!"
 * Mumu is the only male Pokémon that Ruby currently owns.