Hachi is a male octoling, known as the male Agent 8. He's a calm person who's honestly nice to some people as long as they're nice back.
He originally met Goggles in the Deepsea Metro, and got his nickname  (Hachi) from Goggles!
He's good at metalwork and being able to repair things well, and was originally called Agent 8 from having 10,008 on his wristband.
He's in Team Hachi as the team leader and is pretty nice to his friends and is actually a good team leader.