Deru-Deru Mizuzou-Kun

Deru-Deru Mizuzou-Kun is one of Lala's inventions who appear only in the anime.

Features
Its appearance is a purple elephant with green eyes, Deviluke's symbol at the center of its forehead and a handle at its buttocks.

It functions to discharge water through its trunk as much as it is apparently able to inundate the place with its content in some occasion.

Appearance
In episode 3 of the first season, it is used for the first and last time as Lala took the fish out of their predetermined environment so they began to jump due to lack of water, when a man explained the inconvenience, she was in her eagerness to save them with her invention.

However, without measuring the consequences flooding the aquarium of Sainan Town, it ended up to interrupt the mutual romantic declaration between Rito and Haruna.

Trivia

 * The name means "leaking" for Deru-Deru and "Water Elephant" for Mizuzou in Japanese.