High Quality Content by WIKIPEDIA articles! Ysbaddaden Bencawr; "Ysbaddaden, Chief of Giants," is the primary antagonist of the Welsh romance Culhwch ac Olwen. A vicious giant residing in a nigh on unreachabe castle, he is the father of Olwen and uncle of Goreu fab Custennin. So huge is his frame, that he requires great forks to prop up his eyelids.