Spoiler

A lioness who would later be Leo's mate and bear him a son and daughter. She is the niece of the old mazori Specklerex and lives with him after her parents are slain by hunters. She notices things that Leo sometimes overlooks. She is always there when he needs advice, a "better nature" to calm him down in anger or impatience, a shoulder to cry on, or a warrior at his side. In the movie, Lyre falls victim to the speckled fever and slowly dies.

(Source: Wikipedia)