The Mastermind

The Mastermind is a hardmode-boss. He is a hardmode Brain of Cthulhu. It can be summoned with the Blood Brain. He looks like the normal one, but bigger and he has two holes on his downside, using to shoot ichor. He has aswell an dark-red body. Can also spawn in the night with the message: You are getting headaches...

Stats
-45000 HP -20 defense -30 damage (Expert Mode: 60 damage) -45 damage (Expert Mode: 70 damage) -50 damage (Expert Mode Phase)

Phase 1
He uses his holes on his downside to shoot Ichor stream at you. He's as well teleporting. 10 Master Creepers are surrounding him, but you can hit the brain nevertheless. They're charging at you.

Phase 2
When he reaches 22500 HP, an eye looking like one of the eyes of Worldfeeder, only blood red and bigger, will appear on his heart, shooting ichor blasts. He also stops shooting ichor from his holes, as the holes are closing. He will teleport faster and will have an yellow aura on him. Touching him will give you the Ichor Debuff for 5 seconds.

Expert Phase 3
In Expert Mode, he has a third form. When he has only 5000 HP left The eye is closing, and he will go in a rush mode. He charges at you incredibly fast, dealing 50 damage each hit, no matter how many defense you have. He is getting dangerous.

Drops
-10 Gold Coins (100%) -20-40 Souls of Might (100%) -5-15 Greater Healing Potions (100%) -Mastermind Mask (14,29%) -Mastermind Trophy (10%) -15-35 Hallowed Bars (100%) -Bloody Scarf (Expert Mode Item)

Trivia
-This is a non-mecha boss.