The Medaka Mermaid Quintuplets are five small young mermaids who are friends with Keimi. Their names are Ichika, Nika, Sanka, Yonka, and Yonka Two.
Sanka has orange hair and a blue striped tail, with both her top and hat being solid blue.
The sisters have a unique way of speaking. Ichika starts by making a statement. Nika then repeats the statement with more emphasis. Sanka follows by stating the opposite of the original statement. Yonka questions the original statement, and Yonka Two questions whether the original statement is even important. Here's an example:
-Ichika: Luffy is a pirate.
-Nika: Luffy is a pirate!
-Sanka: Luffy isn't a pirate.
-Yonka: Luffy might be a pirate.
-Yonka Two: So what if Luffy's a pirate?
Besides this, they are cheerful and friendly, usually staying close together.
First Appearance: Chapter 608; Episode 527
(source: One Piece Wikia)
