Brain Freeze

Brain Freeze is a boss that can be summoned using the Soul of the Slime Titan, dropped by Slimeheart. It's a giant brain encased in a block of ice. It will attempt to slide at you, riccocheting off any blocks it comes across, and instantly killing anything in its path. After this fails 3 times, it will levitate into the air and try to crush you. It can only be killed by shooting an arrow out of a fire-related bow to drop its ice shield, and then shooting it again with any other bow. Note: After you drop the ice shield it will repeatedly attempt to crush you and stay in motion as long as possible.

Loot
Soul of the Brain Titan

Brain Freeze Trophy

Trivia
This is the second in a series of Titan Souls based bosses. Brain Freeze was the best name for it so I just added a space between "Brain" and "Freeze."