Sam lives underwater alongside companions Marin, Urin, and Warin, forming a close-knit group. He possesses green hair, blue eyes, and distinctive pointy ears. Sam is consistently cheerful and optimistic, approaching life with a lighthearted perspective and focusing on the positive. He displays confidence, especially in romantic pursuits, considering himself charming and capable of winning over women. However, these attempts consistently fail with humans like Kanon, sometimes leading to physical rejection. Sam shares a primary close companionship with Warin, frequently traveling and undertaking activities together. When Marin and Urin journey to the surface and face potential danger, Sam demonstrates loyalty and concern by joining Warin to search for them, highlighting his commitment to the group. Significant character development or changes in his personality traits are not depicted. Information about his origins, specific background history, or involvement in events beyond the main storyline remains unavailable.