King Arthur Badon, where he is said to have single-handedly killed 960 men. Recent studies, however, question the reliability of the "Historia Brittonum". The other text that seems to support the case for Arthur's historical existence is the 10th-century "Annales Cambriae", which also link Arthur with the Battle of Badon. The "Annales" date this battle to 516–518, and also mention the Battle of Camlann, in which Arthur and Medraut (Mordred) were both killed, dated to 537–539. These details have often been used to bolster confidence in the "Historia"<nowiki>'</nowiki>s account and to confirm that Arthur really did fight at Badon. Problems have been
Last Rites (Once Upon a Time) a piece of the Olympian Crystal is still around, which Mr. Gold collects for a new plan. King Arthur comes inside the Underbrooke diner, confused and not knowing that he is dead, until he is reunited with Hook who after a denial and angry conversation tells him he's in the Underworld now, he asks for Arthur's help in stopping Hades. King Arthur agrees to help him after being told he can either be sent to a better place or worse place or be trapped here forever. Later, Hook and King Arthur searched Hades' lair where they look for Hades' story,