Riku Sanjo was born in Oita in 1964. He began his manga career writing a radio-controlled car story for the magazine Comic BomBom . Dragon Quest: The Adventure of Dai launched in 1989 as Sanjo and Koji Inada's first work together. Beet the Vandel Buster , their latest collaboration, debuted in Monthly Shonen Jump in 2002. Koji Inada was born in Tokyo in 1964. He debuted as a manga creator with Rouge Magic in 1985. His first serialized manga, Dragon Quest: The Adventure of Dai , started in Weekly Shonen Jump in 1989. Inada and Sanjo's Dragon Quest IV Gaiden -Jigoku no Meikyu- (Dragon Quest IV Side Story: Hell's Labyrinth) followed in 2001, the year before their most recent series.

Yuji Horii was born in Hyogo in 1954. He entered and won Enix's (now, Square Enix) game programming contest in 1982. As a game designer, he's known as the Dragon Quest series creator. He's created multiple hit titles in the series and is still active in the world of game design.