As I understand it he was a little black fellow. Since he was a Donegal man, as far as I remember, he probably would have had the colouring typical of that area: pale skin, pale grey eyes, very dark curly hair, black eyebrows and thick black eyelashes.

He was a horseman - or rather, he fought from a chariot, which was controlled by his foster-brother.... Laochra, was it?

He was also a touchy little bastard (especially for a king's sister's son), who snobbishly said that he was not brought up "between the hearthstone and the kneading-trough" - in other words, grabbing the passing bit of bread - but in a king's house.

He was obviously not a man in great control of his temper, from the first sight of him playing hurling against all the other children and beating them all (even today hurling is... well... rough... while then it had no rules except win and survive) to the next when he kills a savage mastiff by thrusting his hurling-ball down its throat with his bare hands, to the point when he kills his own son through a prideful mistake, then attacks the sea in a rage of grief, to the point of death when he is forced by clashing taboos to break one taboo after another, and ends up dying, having tied himself to a rock so he'll die upright and facing the rising son, and as he dies he sees a crow drinking his blood, laughs at it and kills it, and dies laughing. Or that's as far as I remember the Red Branch stuff. Heavy dude.