ERROR

A new boss for minecraft could be ERROR. He spawns in the dimension the player is in because he is hunting for the player. Once ERROR has found the player he won't stop until he wins the fight. ERROR's abilities are he can spawn any other mob in the game, he can fire any range item in the game even the warden's sonic range attack, he can fly, breath in lava and water, he can teleport, he can break blocks, do almost any command and has multiple lives. He has 5 lives, and if you put him in the void he can just teleport without getting damaged from the void.