15 Most Toughest Bosses In The Dark Souls Series

5. Slave Knight Gael – Dark Souls 3: The Ringed City DLC

It’s great that From Software filled The Ringed City with some of its toughest bosses till date. Slave Knight Gael is no exception – he has three phases to overcome, becoming stronger and stronger as time goes on. He can hit you from range with his crossbow, throw light discs at you, fly at you and attack and even cast lightning. The fact that his third phase mixes all of his previous abilities together along with new attacks makes him one of the toughest endurance fights in the series.