Gauche, Prince of the Land of Rainbows known as Oz, wields magic with a playful and mischievous spirit, delighting in surprising others. While his magic fuels entertaining pranks, it also reveals a gentle core, bringing joy especially to children. He maintains a complex relationship with his older brother, a skilled wizard residing in eastern Oz, simultaneously respecting his abilities while finding his overbearing concern irritating.

Gauche favors biscuits dipped in milk and avoids bell peppers. His life centers on fun and lighthearted mischief, guided by a personal motto reflecting this approach. As prince, he navigates royal duties alongside his inclination for whimsical antics, constantly seeking creative ways to astonish and entertain through magical surprises.