Terraria Map
Stats
| Classic | Expert | Master | |
|---|---|---|---|
| Life | 150 | 300 | 450 |
| Contact damage | 50 | 100 | 150 |
| Defense | 18 | 18 | 18 |
| Knockback resistance | 20% | 28% | 36% |
| Coin value | 4 silver | 10 silver | 10 silver |
Where and when it spawns
- Biomes
- Underground
Drops
| Item | Chance | Amount | Modes | Condition |
|---|---|---|---|---|
 Gel | 100% (always) | 1–2 | All modes | |
 Slime Staff | 0.01% (1 in 10,000) | 1 | Classic only | |
 Bezoar | 1% (1 in 100) | 1 | Classic only | |
| Slime Staff | 0.014% (1 in 7,000) | 1 | Expert and Master | |
| Bezoar | 1.99% (183 in 9,196) | 1 | Expert and Master |
Chances are for one kill, before Luck, Rate of fire or banners change anything. The Modes column says in which difficulties the game lists the drop.
Smiling venomous droplets of cavern rock
The Toxic Sludge is an expressive gelatinous creature encountered in the Cavern layer during Hardmode. Sporting a bizarre cheerful smile across its lime-green body, it carries 150 life and 18 defense, delivering 50 contact damage in Classic, scaling to 100 in Expert and 150 in Master. Strikes from this acidic droplet inflict the Poisoned debuff, causing persistent damage over time.
Bezoar harvesting and poison immunity
Despite its smiling face, the Toxic Sludge bounds with high vertical hops that easily leap over standard barricades. Striking it with rapid-fire weapons or summoner whips neutralizes its leaps before poison is applied. Defeating Toxic Sludge offers a 1% chance to claim the Bezoar, an immunity accessory vital for crafting the Medicated Bandage and Ankh Shield, alongside Gel at 100% (quantity 1–2).
Trivia
- It maintains an unsettling, wide cheerful grin on its face regardless of combat circumstances.
- Its Bezoar drop provides complete immunity to Poisoned, neutralizing future encounters with hornets and slimes.