Excel Saga is a manga series written and illustrated by Kōshi Rikudō. It was serialized in Young King OURs from 1996 to 2011, and its individual chapters were collected and published in 27 tankōbon volumes by Shōnen Gahōsha. The series follows the attempts of Across, a "secret ideological organization", to conquer the city of Fukuoka as a first step towards world domination. The title character of the series, Excel, is a key member of the group who is working towards completing this goal, while the city is being defended by a shadowy government agency led by Dr. Kabapu.

Shinichi Watanabe is a Japanese anime director and voice actor. He is best known for his over-the-top adaptation of Rikdo Koshi's Excel Saga, in which he appears as the character Nabeshin.