The Morpheus Beast is an enemy in Chains of Olympus.
It appears as a gigantic gray smilodon with a human-like face and is partially concealed in dark fog. The Morpheus Beast often appears by emerging from the black fog of Morpheus. It attacks Kratos by striking at him with his claws, pouncing onto him, or breathing shadowy flames at him. Kratos can kill the Morpheus beast by latching his blades onto it, getting up onto its back, then impaling it in the chest and cutting it open.
Much later in the game, Kratos will encounter a similar, stronger enemy, known as the Sphinx.