Elineh is a kobold merchant leading caravans across diverse regions, operating a large trading company with significant influence. His extensive shop in Felskeiro runs without his daily presence, as he frequently travels for business. He first meets Cayna in a remote village, becoming a key contact. He teaches her fundamental economic concepts like market prices and monetary value, despite her extraordinary abilities. This mentorship develops into a professional rapport; during their shared travels, he occasionally hires her as a caravan bodyguard.

Physically, Elineh resembles a short, anthropomorphic dog. Camel-brown fur covers his body, with cream-colored tufts on his triangular ears and muzzle. He possesses plantigrade limbs and stands no taller than a human child. His greyish-brown eyes are accentuated by round-framed glasses. His typical attire includes a knee-length, dull chestnut-red trench coat worn without the hood, dark brown pants, and nutmeg-brown leather shoes. Light novel and manga depictions show him with a backpack and belt bag, though anime portrayals lack these items.

Elineh possesses no combat abilities, relying entirely on hired escorts for caravan protection. His expertise lies in mercantile skills like trade negotiation and brokerage, granting him extensive information networks. He occasionally functions as an information broker for Cayna, leveraging these connections to assist her.

He is married to a kobold wife who uses a magical item to transform into a human; the mechanics of this ability remain unspecified. Their relationship and family life are not detailed in available sources. Elineh’s background story and development across official media lack elaboration beyond his established role as a merchant and intermediary figure.