Keimi

A mermaid who appeared in the Hatchan's Sea-Floor Stroll mini-series. She first appears after being saved by Hatchan from inside the mouth of a big fish alongside her Starfish friend. She soon becomes friends with Hatchan and is later rescued again by him after she is kidnapped by some old Fish-Men friends of his. In the final part of the mini-series she was at the grand opening of his floating takoyaki restaurant. She is one of only two mermaids featured so far in the series.