クロ

Although he may have a cold and blurry attitude, Kuro is very thoughtful and has a strong core. He's trying his hardest to figure out what happened to all his friends.

Race: Bluefin Tuna (Hence why "2" in human years is an adult age for him)

Hobbies: Counting scales of other fish

Special skill: He can swim very slowly even when he's not sleeping

Most important thing: His peaceful past

Favorite time: Days when his favorite keeper is in charge