Sponge Creature

Sponge Creatures are creatures that are only encountered once the God Artifact is taken.

Gameplay
Once the God Artifact is taken in the Hidden Town, a single Sponge Creature is spawned inside of the house. This Sponge Creature is slower than all of the others, which were spawned all over the map and the Temple.

The Sponge Creatures that spawn outside are barely slower then the player, making them slowly build up into a mass behind the player as they run to the Temple to place the artifact. It is important that the player doesn't move often and moves in straight lines as sharp turns will usually cause the sponges to catch up and damage you insanely fast, killing the player.

Story (Templum Inundatio)
Sponge Creatures are guardians of the Sponge God, Yargslog. Yargslog is presumably the leader of the Sponge Creatures, similar to how Yggdrasil is the leader of the Moss Men.

They attack the player for two main reasons, stealing the artifact, and the fact they are a Water Buddy, since sponges are used to absorb water.