10 Hardest Video Game Bosses of All Time Sephiroth (Kingdom Hearts II) Through The Fire and Flames (Guitar Hero III) ... M'uru (World of Warcraft) ... Yiazmat (Final Fantasy 12) ... Sigrun (God of War) ... Dracula (Castlevania) ... The Nameless King (Dark Souls 3) ... Dr Kahl's Robot (Cuphead) ... More items... May 23, 2023