The Eyebomination

The Eyebomination is a pre-hardmode miniboss that has a 13% chance to spawn in a blood moon once the Eye Of Cthulhu has been defeated.

Spawning
The Eyebomination has a 13% chance to spawn in a blood moon, but only once the Eye Of Cthulhu has been defeated. This increases to 16% once the Twins have been defeated. Also once the Twins have been defeated, the Eyebomination's HP doubles. When it spawns will be warned with "The feared Eyebomination has come yet again to reap the world!"

Battle
The Eyebomination will spawn in the sky during a blood moon. It will spawn Demon Eyes and will swiftly fly towards the player. Under 64% HP it will start spawning Eye Shields that are like blue tinted Demon Eyes. These eye shields go around the Eyebomination, protecting it from damage. Each eye shield has 100 HP, which doubles in Expert Mode, and doubles again in Master Mode. Under 50% HP, in master mode and above it will spawn lasers. Under 25% HP in expert mode, the Eyebomination begins to get faster every time it is hit. At 5% HP the miniboss will be able to regenerate, and that's all the battle. When the Eyebomination is killed a message appears saying "The feared Eyebomination has been defeated and the world is yet again safe."