A sanitized octoling DJ that creates most of the music heard in Splatoon 2: Octo Expansion. Her perfectionism in creating sounds led her to accidentally stumbling into a testing facility, where she was sanitized and remains to this day.
Like other sanitized members of her kind, she has green skin and purple tentacle hair. She wears a loose-fitting black shirt with bare shoulders as well as a baseball cap, and appears to be wearing some sort of technological sunglasses.
The supplementary magazine Haikara Walker reveals her real name (in Japanese) to be Mizuta Ahato.
She later reappears under the name of Acht in Splatoon 3: Side Order, where she is refered to as Mizuta in Japanese. name comes from Giant Pacific octopus (水蛸，mizutako).