Bayle the Dread is easily one of, if not the, hardest boss in Elden Ring: Shadow of the Erdtree. He's optional—which is a red flag if you know FromSoftware games—and the first time you hear about him is from a man with no legs screaming his name over and over out of a relentless thirst for revenge.
As far as dragon bosses go, Bayle is brutal: He may lack arms and a leg after years (centuries?) of conflict, but he's still an agile dragon who can spit lightning storms and set his arena ablaze as you face off against him. You should plan for a lengthy fight, especially if you summon other players to help out (which increases his total HP).
