Crystal Slime

The Crystal Slime is an enemy frequently summoned by the Queen Slime alongside Bouncy Slimes and Heavenly Slimes. It poses a minimal threat to the player and is designed to distract you during the fight, however in Master mode, it poses a much greater threat and significantly increases the difficulty of the boss fight as its projectile attack will now inflict significantly more damage and will also cover a far larger area.

Crystal Slimes stop spawning once the Queen Slime transfers to her second phase.

Trivia

 * The Crystal Slime,, Baby Slime Slimeling, Bouncy Slime, and Heavenly Slime are the only slimes without their own.
 * The Crystal Slime can be considered a hardmode counterpart to the Spiked Slime, with the only differences except the stats being: immunity to confusion, and no singular spike attack.