In standard Onigotchi, you have 12 possible adult forms. In , there is a 13th secret form: El Malogotchi . To unlock it, you must:
: Version 1.04 introduced a rare hidden evolution where, if the Oni is neglected in a specific "Malo" environment, it transforms into a "Hollowed" variant rather than simply dying—a mechanic that adds a layer of psychological horror to the pet-sim genre. Audio Synthesis Onigotchi -v1.04- -Malo Color-