Kaihei Otouto

Kaihei Otouto receives limited characterization independent of his brother. His role is largely comedic, with the pair usually presented together.

Kaihei Otouto possesses the basic training expected of a Marine soldier.

No individually established Devil Fruit, Haki, or named fighting technique is associated with him.

Kaihei Otouto appears as one of the minor Marine supporting characters in One Piece Party.

His appearances generally involve his older brother rather than an independent plot.

Kaihei Ani is Kaihei Otouto's older brother and frequent companion.