BabyMetal

BabyMetal (stylized in all caps) is a Costume Mario character introduced in .

Super Mario Maker 2 Plus
BabyMetal would have appeared in , but this was removed from the game. However, BabyMetal appears as a character power-up form in Super Mario Maker 3; touching a Fox Mask turns the player into BabyMetal. The player must complete an area in Remix 10 on the Normal setting to unlock this character.

Voice clips provided by the band's members are recycled from Super Mario Maker. Regardless of language, all voice clips are in Japanese.

Origin
is a Japanese   band. Their lineup consists of as "Su-Metal",  as "YuiMetal", and  as "MoaMetal". The concept of the group is a fusion of the heavy metal and Japanese idol genres. On October 19, 2018, YuiMetal went on hiatus due to poor health, leading a rotation of one or more backup dancers taking over where she left off to form a trio; YuiMetal, however, returned in 2022 for BabyMetal to release a new mobile game called BabyMetal: Living Legend.