Sara

Sara (サラ) is the human alias of Nyuuru (ニャーアルー), a member of the declining Mermaid Clan (マーメイド族). She acts as an ally and the love interest of Kairi Sahaku/Kamen Rider Draig.

Etymology
Her human name is the Japanese onomateopeia for clear water flowing through a stream. Her monster name, Nyuuru, is derived from the Japanese onomotopeia for slurry flowing through one's hands (nyuru nyuru).