A regular Tron skin with the eyes and mouth of a creeper.
A creeper giving chase and about to explode. Creepers will chase after any player, as long as it is within a 16 block (±5%) radius and ±4 blocks vertically. As of 1.9[upcoming], the detection range of creepers is reduced to half of their normal range (8 blocks) when the player is wearing a creeper mob head.
Creepers can climb up ladders and vines like any other mob, but do not do so intentionally.
When within one block of a player, a creeper will hiss loudly, start flashing and inflating, and violently explode after 1.5 seconds. A creeper’s detonation can be halted if the player gets out of the blast radius (about 3 – 5 blocks, depending on the difficulty setting; including by knocking back a creeper) or kills it. However, the creeper’s fuse countdown lasts a little longer if it encounters a cobweb, and it will not explode at all when completely inside cobweb. 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).
Creepers are never targeted by any mobs, other than the wither and the snow golem. If they are hit by a stray projectile, they will only retaliate if they are not already chasing a player.