The Futari wa Pretty Cure: Max Heart universe and related media contain no character named "Square". Documentation covers protagonists Nagisa Misumi/Cure Black, Honoka Yukishiro/Cure White, and Hikari Kujou/Shiny Luminous; their fairy companions Mepple, Mipple, Pollun, and Lulun; antagonists including Uraganos and Viblis; and supporting entities like the Heartiels. No references to "Square" exist across seasons, movies, or spin-offs.