There are a few bosses in terraria and they can be summoned,spawn,or even spawn during an other boss fight!

Pre-Hardmode BossesEdit


The Eye of Cuthulu

And the Eater of Worlds A.K.A EoW

The Wall of Flesh A.K.A WoF

King Slime

Hardmode BossesEdit

The Twins(see The Eye of Cuthulu)

The Destroyer (see EoW)

And the Skeletron Prime (see skeletron)