Five-person vocal group and unit in Umamusume originally debuting on April Fools' 2023 with a music video (Hat on Your Head!) and a mock website listing the group's manifesto with personalized bios for each unit member as though they were a real-life music group.
BoC'z is a wordplay that can be read as "boushis" in Japanese (literally "The Hats"). Its members are all hat-wearing umamusume and consist of the following:
