Mega is a lion who lived during Simba's reign.
Mega is first seen resting under the shade of an acacia tree whilst talking to a group of Pridelanders consisting of Babu, Boga, Leo, Ngawa, and Sabini. Kopa, the prince of the Pride Lands, runs up to the group and misunderstands their conversation about "family trees." When Kopa asks "where" his family tree is, Mega tells him that Simba would want the honor of telling his son about their family tree. This is the only line Mega has in the book.
According to the text, Mega is an adult lion with a full mane. In the picture, he has golden fur, an orange mane, and a pale chest, muzzle, and paws. His eyes are dark red.