Eriru  

, エリル

Eriru is one of the Dark Lovers, known as the second in line. Despite being portrayed as an idiot, she can be quite dangerous when she changes her demeanor. She possesses two distinct personalities; typically, she's playful and kind-hearted, but when provoked, her eyes turn red and she transforms into a more malevolent version of herself who controls water. Although she admires Gaito and believes she has superior strategies for capturing the Mermaid Princesses, her efforts ultimately fail, leading Gaito to question her affinity for him due to her apparent foolishness.