Kevin

 is a boy from Polly Port who is supposedly descended from a mermaid.

Personality
Kevin in obsessed with the stories of his great-grandfather marrying a mermaid, to the point that he is willing to go out to sea alone despite not being able to swim. He was quick to fall in love, believing himself to have been saved by a mermaid, despite knowing nothing about his savior.

Plot
Kevin almost drowns at the Blue Cove, but is saved by Husky who is using his Anima. Ken mistakes Husky for a mermaid, and likens the situation to stories of his great-grandfather marrying a mermaid, and quickly falls in love with what he doesn't realize is actually Husky. He sits by the sea at night hoping to see the mermaid again to no avail. He later heads out to sea in a boat that his friends had rigged to sink; Husky saves him again, and with some difficulty explains his identity to Kevin.

Trivia

 * In the Japanese chapter 23 when the locals gossip about him being saved by a mermaid, his name is misspelled as "ケビン". It is spelled as "ケヴィン" everywhere else.