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 * In Paper Mario, the Japanese characters on the Toad Town Dojo's billboard (pictured) read "Way of the old man" in reference to The Master.
 * Nana is the oldest portrait ghost (who has a known age) in Luigi's Mansion.
 * The rank and colorations of Sergeant Guy, Corporal Paraplonk, and Private Goomp references to the first three Keronians encountered in the anime Sgt. Frog.
 * In the Japanese version Ashley's Song, if the lines of her spells are read backwards, it says "umeido in uario ijū nanuba wan", or "Made in Wario Is Number One" ("Made in Wario" is the Japanese title of "WarioWare" games)