Dokkan! Robotendon

 is an anime created by Tatsunoko Productions.
Plot summary.
Robotendon is a strange robot boy who decides to go to a Japanese restaurant in Tokyo called "Gurugurume", where he proposes to work to pay for every meal he plans on having. Very strong and cute, Robotendon moves at the speed of lightning. Curiously, his power source is rice. Robotendon plays the central role in this series, along with the Kamada family, the owners of the restaurant, their son, Gratin, and his girlfriend, Salad Nabu.