Spiked Slime

The Spiked Slime is an enemy summoned by the King Slime boss in Expert Mode. Spiked Slimes are summoned alongside Blue Slimes by King Slime and become more common as the boss loses health. Like the Spiked Ice and Jungle Slimes, they have the ability to shoot spikes at the player.

Trivia

 * Their spikes seem to be made out of hardened gel.
 * The Spiked Slime, Baby Slime, Slimeling, Crystal Slime, Bouncy Slime, and Heavenly Slime are the only slimes without their own.
 * While other enemies spawned by bosses, such as the Servants of Cthulhu, have a Bestiary entry, the Spiked Slime does not. This is likely because it is an Expert Mode-exclusive enemy and if it did have a Bestiary entry, it would be impossible to complete it fully in a Classic world.
 * The Spiked Slime, Jungle Mimic, Golden Slime, and Pirate's Curse are the only killable enemies without Bestiary entries.