Pyro was laughing cheerfully, skipping around Uruks, kicking Uruks, cutting Uruks. He hummed 'Do You Believe In Magic?' as he skipped through the battle, cutting, burning and punching anything. When he saw Vader retreating, his shoulders slumped. He burnt one last Uruk who made the worst decision of his life, also known as, trying to ambush Pyro.
He followed Vader, skipping merrily and burning every enemy in his path.