Karika is a female member of the Patrol Team in the fantasy world of Tronis-Heracleion. She has a large, muscular build, chocolate‑brown skin, pointed ears, and thick hair. She is initially suspicious and hostile toward Eguchi, questioning his story about coming from another world. She demands coherent explanations and is quick to dismiss his claims as absurd. During the interrogation at the Patrol Team station, she pressures Eguchi and shows a practical, skeptical nature. Later, she agrees to observe Eguchi’s demonstration at Vlad’s blacksmith guild, though she remains wary. She works alongside Alexis and is strict but willing to test Eguchi’s assertions if he can prove his expertise.
