The Awakening of Moonlord Add-on 1.21+

Sometimes you want to merge elements from different games into one world. The mod The Awakening of Moonlord brings in Terraria features, including a boss with a unique attack style and additional phases, to Minecraft PE. Along with the boss, new items, coins, and potions are added, which you can use during survival. Even at this early stage of development, it already noticeably expands possibilities and makes the game more diverse.

Eye of Cthulhu

One of the first bosses in Terraria

This giant, demonic, floating eye attacks by rapidly speeding up and becomes even more aggressive in its second phase