Fish of Darkness

Fish of Darkness was a Mysterious Being and the head of Niya Niya Loans.

Appearance
As a human, he wears a suit, with a poet shirt underneath, and big red sunglasses. As a Mysterious Being he has BDSM goldfish look.

Road to Hero
He got beaten up by Saitama for a reward.

Physical Abilities
Enhanced Speed: Fish of Darkness is fairly fast. He is a able to attack with his whip in rapid succession.

Egg Spit: Fish of Darkness demonstrated the ability to shoot out eggs from his mouth.

Equipment
Whip: Fish of Darkness uses a whip. He is fairly skilled with it as he was able to give Saitama a hard time, but it should be noted that Saitama was still fairly weak at this time.

Trivia

 * Fish of Darkness is the first mysterious being to be shown to naturally transform from a human.