Toxic Sludge

The Toxic Sludge is a Hardmode slime enemy that appear in the Underground and Cavern layers in place of ordinary slimes. They deal significantly increased damage and have a 50% chance of inflicting the Poisoned debuff, which they are also immune to.

Trivia

 * The Toxic Sludge, along with Hoppin' Jack and the baby slime minion summoned by the Slime Staff, are the only slimes to have a visible face.

History
Boue Toxique