Joostmod/Gray Slime

The Gray Slime is a Hardmode enemy. It splits into 2 smaller slimes when killed multiple times. In total, including the original, this enemy creates 38 slimes.

Tips
Gray slimes can spawn almost anywhere in the Cavern layer. The large amount of individual enemies contained within a single gray slime makes them a great source for souls in the Underground Hallow and Corruption/Crimson at the start of Hardmode.