Creeper

Creepers, released in version 0.4.0, are a green hostile mob that explodes. If you go into the range of Creepers, which is 16 blocks away, to be precise, they will start to follow you and when they are close enough to you, they will start to hiss, flash white and inflate until they finally explode, leaving a crater in their wake. When they do flash white, you have about 1.5 seconds until they explode. However, you can escape this if you get four blocks away from the Creeper. They will stop the countdown and continue chasing you. If killed, the creeper will drop 0-2 gunpowder. They do not drop gunpowder if the creeper blows up itself.



Offense
The creepers only attack is to explode, this however make it a 'one use' mob.. It also starts chasing you at 12 blocks away. The more creepers are trying to kill you, the harder it gets to survive.

Defense
A bow should be your first choice. However, if you are fast enough, it is possible to hit a creeper with a sword without it blowing up on you. To do this, hit it, then step back. Make sure you are a reasonable distance from anything important in case it blows up on you and try sprinting through one to make it explode well taking minimal Damage!

Trivia

 * Creepers are camouflaged and can be very hard to see in large grassy biomes.
 * In Minecraft PC and Xbox, if you get Skeletons to kill a Creeper, the creeper drops a music disc which you can play in a Jukebox. This feature is has not yet implemented in Pocket Edition.
 * Creepers do not burn up in daylight.
 * Creepers can see you 16 blocks away and will not stop following you if you run away unless you find a hiding spot.
 * You can ignite a creeper using flint & Steel.