Roc is a large owl and one of the pets of Eris. It was seen in the beginning of the film where Eris wakes her pets that her plan is to put chaos on the Earth. In another scene, Eris's pets such as Scorpio, Cetus, and the Roc were seeing Eris taking a bath. She became bored that she wanted see more action. She turns one of her bubbles to ice and she summons her Roc to turn everything to ice and snow and attack Sinbad's ship. The Roc attacks Sinbad and his crewsmen and it captures Marina. It plans to eat her, but it ends up biting her coat. Sinbad rescues her and they both go on a snow slide on a sheild and the Roc chases them. They lure the Roc with large rocks above it and it begins to collapse and large rocks fall on the Roc, crushing it.
- This was Eris' first monster to die, though it could have been revived by Eris later on(though Cetus was killed, but was later revived by Eris).