Debri-per

The Debri-per would be a Creeper like mob connected to the Sculk. It would spawn very rarely in Deep Dark biomes or occasionally when Creepers are killed next to a sculk catalyst (chance increases with difficulty). Essentially a Creeper that was overtaken by the sculk giving it a stronger but slower form and now unwillingly serves its new master in spreading the sculk further and protecting it.

All over its body is debris that has gathered and become lodged into its sculk-covered skin over time; arrows, bones, pointed dripstone and rarely raw ore and amethyst shards, all of which are shot out for extra damage when the Debri-per explodes.

Depri-pers are Neutral towards the player and other mobs, they can pick up vibrations but only become hostile if they are attacked or detect skulk blocks being broken. They only explode when at low health, instead choosing to headbutt players initially. When the Debri-per explodes its charge up is longer but won't stop once started. The explosion is larger but does not destroy blocks, rather it spreads sculk blocks and veins. Due to being a byproduct of the sculk, it will not trigger sculk sensors nor will it provoke the Warden.

When killed Debri-pers drop various debris caught in them as well as Sculk powder; a new item that can be brewed to make Sculkskin potions. These prevent the user from triggering sculk blocks through their own vibrations or walking on them, but will still provoke the Warden from direct contact and limit their vision.