In the D3 SR audition their names weren't public. Because the viewers thought she resembles a rabbit, they called her Pyon-chan. That turned into Mahopyon (when her name was revealed). But she wasn't confident in that nickname so she went with "Maho". But Yukirin told her "why don't you go with 'Mahopyon'? You have to become more appealing!" so in the end she decided on "Mahopyon".