Pegasus

Pegasus is Hercules flying horse and also best friend, made by Zeus' magic. Although he is a major character in the Disney movie Hercules, he does not appear in the Kingdom Hearts games until the third installment, just like Megara.

Kingdom Hearts II
During Sora's first visit, Megara gets captured by Hades and Sora and the others go off to rescue her while Hercules fights the Hydra. When Meg is finally found, Pegasus takes her to safety. When they all return to the Coliseum, they find it to be destroyed by the Hydra, making Hercules fall into a depressed state. During the battle against the Hydra, Pegasus helps Sora by letting him ride on his back to attack the Hydra's multiple heads.

During Sora's second visit, Pegasus is only present to take Meg to safety after Hercules saves her and restores his confidence in himself.

In the end credits, he is seen enjoying the view the rebuilt Coliseum with the others.