Jasiri is a fairly small and slim spotted hyena, though she displays strength when fighting Janja's clan. She has gray fur that bears a slight purplish tint. Her lower legs and paws are a very dark shade of purple, and her underbelly is a dull pinkish orange. Her tail is short and bicolored; most of it is deep purple like her paws, but the fur on the very bottom is much paler, the same color as her underbelly. Her eyebrows and ears both match the color of her mane and paws, and her inner ears are dull pink. On each side, she has three round spots, slightly darker than her main coat color, lined up vertically from her shoulder to the joint of her foreleg. Two smaller spots fleck her face on either side, and she has darker stripes along her neck as well as a streak along her spine. Her muzzle is the same color as her spots. She has large, deep blue eyes, encircled by darker fur, and a dark purple mane that is striped with brighter purple. Her mane is long and thick, with a lock in the front drooping to one side.
Jasiri is a friendly hyena whose personality is the opposite of Janja and his clan. Jasiri understands and respects the Circle of Life, whereas Janja's clan of hyenas only care about themselves. Jasiri even goes so far as to teach Kion himself a few points about the Circle of Life that he previously didn't understand. However, her ties to her species shines through in how often she laughs, and even Kion notes that the world is like a giant game to her. She is very spunky and lively, and has been described by her voice actor as zany and opinionated. She is shown to be a bit teasing and sassy, not to mention confident in her fighting skills. Her bravery is displayed when she takes on Janja's entire clan. She is often territorial and reclusive, but this seems to be a cover for her rather friendly side.