Callista, or Calli as she is more commonly known, is an original character created for Legendary Guardian and has no basis in cannon from Square Soft in Final Fantasy X. She appears in several chapters of LG and is a friend to Auron during his teens and early twenties.

Unlike her little character on the left, Calli IS A HUMAN. However, I found that Skittleschan did actually capture the essence of her nature in this playful representation. A year younger than Auron, she is meets him through her friend, Jess. Over time, they develop an independent relationship and Auron introduces Calli to the man she will one day marry - Thuma, a star blitz player for the Luca Goers. As a result, Calli feels great affection for Auron.

Calli is described as being about 5 feet tall, with short flame red hair, green eyes, and pale skin. Her personality is bubbly, outgoing, and prone to jealousy and temper fits. She's an all-around mothering kind of soul with great zest for life and indomitable spirit. During LG she has one child, Graav. Later, in BJ, Calli returns and has added a girl, Doram, to her growing family.