Matikanetannhauser (Umamusume) as 816-n of the Boc'Z (Umamusume) unit.
Wears Black Pants, a grey Sports Bra with "BOUSHIS" printed on the bottom elastic, a Black Jacket worn off-shoulders and the requisite "Boc'z" black Baseball Cap with ear outlets, worn off-center on her right ear as it is typical from Machitan.
"816-n" is an obfuscated version of her catch phase as it is meant to be read as "Ei Mun".