Erina

Erina is a monster girl tamer and the daughter of the famous monster girl tamer Bastal Batch. When she discovers that Leo was dragged off to Squid Paradise to rescue the monster girls there from Baron Squid she goes there herself with her loyal monster girl Tenten. She competes with Leo for the monster girls and will capture them herself if he's too slow.

Spoiler

Late in the game she's captured by Baron Squid and held captive until she agrees to sign a contract to lose her humanity and become a monster girl.