Terraria has a NEW Secret Boss

Terraria Bosses in Order by @gamingcollective - Listium

Terraria 1.4.4 update release date and everything new in Labor of Love

Zenith World Map (Has all Secret World Seeds traits) - Mods for Terraria

Bosses - Terraria Wiki

Terraria' and 'Don't Starve' tease a mysterious boss-themed crossover

Blog - BisectHosting

Terraria achievements guide - Polygon

Terraria NEW SECRET DUNGEON BOSS FIGHT! (Terraria Easter Egg) // demize animated gif

This is a secret rainbow seed in Terraria that makes everything colour