Barbara the Bat won’t be known to many US gamers as she’s the main guitarist in the Japanese Nintendo DS game Daigasso Band Brothers, which never saw release over here. Europeans may know her from Jam With The Band, a sequel that released on the Nintendo DS, but again, skipped America.
Barbara’s costume will be unlocked by completing her Event Course in Super Mario Maker. This course is expected to be available in the evening of February 25, 2016. Until then, take a look at what to expect: