The Old Monk, the boss of world 3-3, is arguably one of the most unique bosses in video game history. While at its base the fight is merely a Black Phantom enemy NPC summoned by the Monk himself, when Online Play is activated the Black Phantom can actually be another player. Any players with summon signs in the Tower of Latria can be summoned to play the role of the Monk's Black Phantom. The Black Phantom players retain all their equipment and abilities, as well as gaining some innate magic attacks by the Monk, giving the boss fight incredibly diverse possibilities.