Dark One

Dark One is a boss that can appear: • In all environments of Chapter 2 (Caves, Catacombs, Flooded Caves). • Only in the Catacombs. Contents • 1 Behavior • 2 Gallery • 3 Notes • 4 Trivia • 5 Bugs

• Sends out a ring of 12 projectiles.
• If Isaac is below him, fires a Brimstone laser downwards.
• Charges twice across the screen, veering slowly towards Isaac while charging. When going off-screen, he reappears from the opposite end of the screen. Dark One will do this attack more often if Isaac moves to one of his sides.
• Dims the room, causing the Curse of Darkness effect for a period of time.

3DS If Dark One dims the room, pause the game and the dim will eventually go away while still in the pause screen.

• The Adversary is the posthumous version of him.
• One of Dark One's horns is cut off during his death animation, signifying his transformation into The Adversary.
• The sprite can flip horizontally, making it look like the Dark One lost his right horn, even though the Adversary's left horn is broken
• Dark One is one of the three bosses that can dim the room (a temporary Curse of Darkness effect). The other bosses are The Adversary and The Lamb.