Deru-Deru Mizuzou-Kun

Deru-Deru Mizuzou-Kun is one of Lala's inventions, in which is only used once by herself. Its name means "leaking" in Deru-Deru, and "Water Elefant" in Mizuzou in Japanese. And this invention only appears in anime of the first season. Its appearance is a purple elefant with green eyes, Deviluke's symbol at the centre of its forehead and a handle at its bottom. Its function is to throw out water from its interior through its tusk with a great power that is favorable to the great pressure that is capable to wield. In some occasions, it can attain to flood the place where it is, but this is believed as the reason for which Lala never uses it again. This invention was favoured for which Lala supplied pills for the fish which jump out of the water, if it did not happen, the invention is perhaps never seen in the anime.

Appearance
In the episode 3 of the first season, it is only used in the anime after Lala catches fish from their predetermined environment for which they began to jump for lack of water, when a man explained a new protagonist the problem that they had, she is in hurry for saving them using her invention but without worrying the consequences that cause the inundation of the aquarium in Sainan Town, and the problem that interrupts the mutual romantic notice of Rito and Haruna. Lala holds this invention and turns it on and the invention gets ready for flooding water to save fish of lack of water. Lala smiles but without calculation which this invention inundates the place. Lala is ready to launch into water and let the invention behind and she plunges into water and abandons the invention.