A shulker is a passive-aggressive mob found in the game Minecraft. It resembles a small, box-like creature that can camouflage itself within its shell. When a player approaches, it opens its shell and shoots a projectile called a "shulker bullet," which can inflict the levitation effect, causing players to float upwards. Shulkers are primarily located in End Cities, which are structures found in the End dimension. Defeating shulkers can yield valuable items, including shulker shells. These shells can be combined with chests to create shulker boxes, which are portable storage containers that retain their contents even when broken.