Pinkymod/Demon of Dissonance

The Demon of Dissonance is a Hardmode miniboss. It fires many abysmal shadowflame fireballs at you. It spawns in the Dungeon in classic mode after Plantera is defeated. Otherwise, it spawns in The Void.

Trivia

 * The Demon of Dissonance does not have a sprite itself, but appears as a cloud of shadowflames.