Actor Michael Fassbender ("X-Men") continues developing a feature based on 'Cú Chulainn', the greatest Irish warrior in Celtic mythology:
Stories of Chulainn, dating back to the 7th Century were collected in "The Ulster Cycle", aka "Red Branch Cycle"...
...one of four great cycles of Irish mythology, containing heroic Irish legends and sagas.
Cú Chulainn, aka 'The Hound of Ulster', was the son of the god 'Lug' and 'Deichtine', gaining his name after he killed a vicious guard-dog in self-defence, then offering to take its place until a replacement could be reared.