A sanitizedOctoling 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.
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).