The duke of sunlight is a boss. He is the guardian of the Old Voided Ruins.
- The Black Sun Monument: This is one of the parts of Duke of Sunlight.
- Sky Lord: One of the two individual parts. Has its own AI
- Core Lord: One of the two individual parts. Has its own AI
- Lazer Beam: Shoots a lazer that explodes after it leaves the mark in the floor.
- Void Water: Spits out a black substance that can take a lot of damage when the player makes contact.
- Void Balls: Slow moving magic balls spit by the Sky Lord.
- Light Balls: Slow moving magic balls spit by the Core Lord
- Cosmic Explosion: AoE Attack, causes a large explosion.
- Cosmic Lightning Bolt: Spawns a flash of lightning.
- Teleport: Teleports DoS away to some other area.
During Phase 2, the Sky Lord and Void Lord are released and attack with their own AIs
- Cosmic Lightning Barrage: Lighting that spawns from the portals.
- Void Whip/Sky Whip: Void Lord and Sky Lord do this individually, whip their tails at player.
- Pillar: Heals the Duke of Sunlight. Done by both the Sky Lord and the Void Lord. All of them stay still when this happens.
- Heal All: Done by Sky Lord, heals all enemies. Done when it is in low HP. Can be interrupted.
- Cosmic Bomb: Shoots a cosmic bomb that explodes.
- Lazer Barrage: Causes a bunch of lazers to suddenly Appear.
Drops: 30,000 Souls