Cuchulainn's battle frenzy

Another image inspired by Irish mythology. When in his battle frenzy Cuchulainn's features become distorted and as described in Hayes O'Grady's Cuchulainn saga "His calves and heels and hams shift to the front, and his feet and knees to the back, and the muscles of his neck stood out like the head of a young child(very strange). One eye was engulfed in his head, the other protuded, his mouth met his ears and foam poured from his jaws". My interpretation is less strange but would still strike fear into his enemies I reckon.