Lilpilin is the chief of the orc tribe in the Dark Territory of the Underworld. Unlike the typical appearance of his kind, he is unusually handsome, with medium-length blonde hair and yellow eyes. As a ruler, he is merciful and compassionate toward his people, but he harbors a deep sense of inferiority regarding his looks. Because he believes he can never match human beauty, he carries a strong complex and a resulting hostility toward humans.

His motivations are shaped by his role as a tribal leader and his feelings of inadequacy. He serves the emperor of the Dark Territory and participates in the war against the Human Empire, though his actions are often conflicted by his personal nature. When the goddess Terraria, in the form of Leafa, appears before him, he is initially taken aback by her friendly and nonjudgmental demeanor. He decides to escort her to the emperor as a prisoner, but witnesses her being tortured by the dark mage Dee Eye Ell. The sight of Leafa's suffering, compounded by his own recent loss, causes him to break one of the seals on his right eye, unleashing a surge of emotion and a greater degree of his latent power.

Lilpilin's role in the story is that of a supporting character who represents the orc tribe's perspective in the larger conflict. He interacts primarily with Leafa and the dark forces, and his encounter with her challenges his preconceived notions about humans. His development is subtle but notable: he moves from a passive, self-conscious leader to someone who is driven to act by empathy and outrage. His notable abilities are not extensively detailed, but as an orc chief he possesses physical strength and command over his tribe, and the breaking of his eye seal suggests a capacity for enhanced power or resolve.