Cook is a nine or ten-year-old boy with curly black hair and brown eyes, typically dressed in a green jacket and red bandana. He serves as the responsible caretaker and big brother figure for a group of orphans in Vanilla, demonstrating deep concern for their well-being and especially for Gallet Revolt. Cook regularly prepares meals for the group, highlighting his significant cooking skill.

He first appears making dinner in Vanilla when Gallet arrives. Cook then joins Gallet on the quest to find the three legendary cards representing all three races. This journey places him present during critical events, including Gallet's battle against Vizarga. Cook shares a relationship of mutual trust and friendship with Gallet Revolt, who entrusts him with the children's safety during absences and includes him in the quest. Cook also maintains a supportive friendship with Lime, collaborating on childcare duties within the Vanilla community.