Creepers are common hostile mobs that will explode when close to the player. Creepers naturally spawn in the Overworld on top of solid blocks with a light level of 7 or less. Creepers will chase after any player, as long as it is within a 16 block (±5%) radius and ±4 blocks vertically. The detection range of creepers is reduced to half of their normal range (8 blocks) when the player is wearing a creeper mob head.[Java Edition only]
Creepers can climb up ladders and vines like any other mob, but do not do so intentionally.
When within three blocks of a player, a creeper will stop moving, hiss loudly, start flashing and inflating, and explode after 1.5 seconds. A creeper's detonation can be halted if the player gets out of the blast radius (7 blocks), including by knocking back the creeper or killing it. Creepers can be forced to explode by using a flint and steel.
Creepers will flee from ocelots and cats if one is too close, until they are approximately 16 blocks away from the feline(s).
A creeper's explosion has a power of 3 (but see an exception below).
If a creeper is inflicted with a status effect, its explosion will create an area effect cloud of the effect.
Creepers are never targeted by any mobs, other than the wither, the snow golem, and the vindicator named "Johnny." If they are hit by a stray projectile, they will only retaliate if they are not already chasing a player.
It can be briefly seen during the final battle.