DISCLAIMER: The Heart of Cthulhu doesnt contribute for the lore, its just a seasonal boss
The Heart of Cthulhu
The Heart of Cthulhu is a boss that can be summoned using suspicious looking box of chocolates, which can be dropped by any enemy during February. It spawns above the player. It looks like a human heart with an eye in the middle. After a few seconds its eye will open and the fight will begin. It attacks by lashing blood vessels at you and firing lasers from its eye. All its attacks inflict lovestruck and bleeding. It has 12700 health, 13400 in expert, 14200 in master.
Rainbow Spirit
It can be summoned by using the Deformed Rainbow Peice, which has a small chance to drop from the sky instead of Rainbow Peices (bring those back too). It flies toward the player shooting multicoloured projectiles that pass through blocks. It looks like a rainbow peice with an evil looking face and wings.
Lepus
It acts exactly the same.
The Grim Reaper
It looks like the grim reaper, a humanoid figure with a cloak and holding a scythe, with a skull head and glowing red eyes. It attacks by summoning reapers, firing reaper scythes at you, and going transparent and invincible. It can be summoned using an Ancient Scythe, which has a small chance to be dropped by graveyard enemies during October.
Turkor the Ungrateful
Acts exactly the same
Jack frost
Jack frost is a humanoid figure with blue skin, a blue coat and jeans, and light blue hair, and riding on a snowflake. He attacks by spawning Flockos, firing ice projectiles and ice golem lasers at you, and charging at you trying to deal contact damage. You summon him by using Melting Snowflake, which can be dropped by any enemy during December.
