"This article is related to a game that has not been released outside Japan. The coverage here may differ from what it would be in an official translation."
|Family||Unknown, Koraru later becomes her husband|
|Affiliates||Starfy, Starly, Moe, Koraru|
|First Appearance||Densetsu no Stafy 4|
|Latest Appearance||Densetsu no Stafy 4|
Materu is a cute pink fish from the Amy Kingdom who first appeared in Densetsu no Stafy 4, where she seeks Starfy's help in saving her homeland from evil invaders. Starfy apparently has a very strong crush on her. At the end of the game, she married Koraru, leaving Starfy with depression.
- She is one of the few characters to have a voice actor and is heard that she tells Starfy not to give up, but this only seen in the Densetsu no Stafy 4 commercial.