NPC in Splatoon 2 and Splatoon 3.
A sanitized Octoling DJ that creates most of the music heard in Splatoon 2: Octo Expansion. Their perfectionism in creating sounds led them to accidentally stumbling into a testing facility, where they were sanitized and remains to this day.
Like other sanitized members of their kind, they have green skin and purple tentacle hair. They 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 their real name (in Japanese) to be Mizuta Ahato.
They later reappears under the name of Acht in Splatoon 3: Side Order, where they are refered to as Mizuta in Japanese. The name comes from Giant Pacific octopus (水蛸,mizutako).