Kujira

is a slug from the and the personal summon of Kotarō Yagyū. She is unique, in that she is only loyal to Yamagakure.

Personality
Kujira is exceedingly loyal, in that she refuses to be summoned by anyone outside of Yamagakure; even other holders of the slug summoning contract. She is seems to be fond of Kotarō and Ryun, referring to them both, lovingly, as. She is also very protective of the village of shinobi she serves, Yamagakure, and is almost constantly showing concern for its well being.

Appearance
Like Katsuyu, Kujira is a massive slug, easily towering over buildings. She is blue in coloration, and is notable, in that she looks like a cross between a and a slug; with actual eyes, rather than sensors on her antennas, and even dorsal fins. This have lead some to call her a, a name she venomously dislikes.