Aisatsu & Campei

Aisatsu, also known as "Oppressive Waters Aisatsu", is a from the Grand Line from. She, with the rest of the Heikō Pirates are the Main Protagonists of Trials of the World. She worked under Yobidashi S. King in his crew as one of the four Heaven Waters, until the end of the Oshanyuyo Arc.

Campei, also known as "Oppressive Waters Campei", is a large aquatic creature that Aisatsu tamed and follows her every command. He, with the rest of the Heikō Pirates are the Main Protagonists of Trials of the World. He worked under Yobidashi S. King in his crew as one of the four Heaven Waters, until the end of the Oshanyuyo Arc.

They both joined the Heiko Pirates as their 11th and 12th members after dealing with the conflict in Oshanyuyo, and defeating another of King's Pirates' Heaven Waters, liberating the island from Yobidashi S. King's control.

Appearance
Aisatsu is a blue-skinned mermaid with long cyan colored hair that reaches just below her "waist". She occasionally wears a mask that covers her face so that no one may see her facial features, however, the mask does have openings for the eyes, but, considering the shading, it's impossible to tell what eyes lay under the mask.

Her typical attire consists of some clothing that she wears around her chest area, with a pink jewel lying in the middle. The majority of her body is covered by machinery because of "augmentations" she's done to herself, improving her defense. She is always shown with her Harpstaff, and is shown playing music on it during her pass-time.

Campei is a large aquatic creature that is colored in a light blue. He has a large fin on his back that extends all the way to his tail. He has a set of huge teeth that that pierce through the bottom of ships rather easily, and can even break material as tough as steel.

He wears no article of clothing, due to the fact that it makes him uncomfortable and would hinder his movement. The bottom of his body is the only area in which he is not covered by his very sturdy scales, giving him a weakness in that area if he were to be attacked. Due to Aisatsu's enhancements, on the top of his head there is a mechanism that opens up whenever Aisatsu wishes to "merge" with Campei, allowing for Aisatsu co fight alongside Campei, and ultimately, control his movements.

Aside from the majority of the other Heiko Pirates members, Aisatsu and Campei do not undergo a change within their appearance, rather, they've only grown in strength.