Demiurge

Rare as they may be in more hellish biomes like Wnaraka, Demiurges are uniquely vicious once you have one's attention. Once a Demiurge is locked onto the player, it quickly floats right up close in order to catch them in its downward beams — beams that quickly shred health by double digits at a time the longer one stands in them. These beams (usually three of them) gradually destroy single blocks as they sweep over the ground in a rotating motion.

Attacking a Demiurge at a long distance isn't feasible once combat has begun, and neither is trying to run away from the creature. Unless you have the means to move out of its area faster than it can move and cause it to despawn, Demiurges cannot be fled from — they will rapidly rubber-band themselves to your position as you move in any direction.

Aside from their beams, Demiurges also fire bursts of lobbing projectiles from the tops of their heads, akin to Mimoses, further complicating movement while fighting one. Note that unlike those of the Mimos' cousins, these projectiles don't destroy blocks.

What's key to surviving this vermin is to walk backward rather than move quickly with hooks, such that the Demiurge doesn't rubber-band into your position — don't expect the distance between you and it to be consistent as you move, however.

On death, Demiurges always drop a gold covenant and a bull ring, a handy piece of equipment for exploration that boosts jumping and walking speed, while also somewhat mitigating knockback.