Peco reigns as the Prince of Sweets from the Sugar Kingdom, a realm entirely dedicated to crafting desserts and confections, mirroring his own central passion.

He bubbles with cheerful, energetic, and often excitable energy. An intense love for all things sweet defines his personality, frequently bursting forth in enthusiastic talks about desserts. Peco possesses a strong competitive streak, particularly flaring up in his interactions with Mousse, the Prince of the Chocolate Kingdom. Their relationship centers on a fiery rivalry, playing out through frequent clashes over sweets, though underpinned by mutual respect.

Despite his youthful exuberance, Peco demonstrates commitment to his royal duties concerning the Sugar Kingdom and its confectionery heritage. He takes deep pride in his kingdom's creations and actively engages in sweet-themed events.

His interactions often highlight a playful nature, occasionally revealing hints of vulnerability flashing beneath his usual high spirits. He belongs to the larger group of princes within the Dream Kingdom, joining their shared daily life and activities.

His development involves navigating the rivalry with Mousse, learning to channel his competitive drive constructively, and revealing moments of cooperation that underscore his underlying earnestness and dedication to his royal role.