Creeper

Creepers are hostile mobs that spawn in light levels of seven or below. They pose a significant threat to new players, due to their dangerous ability to explode. They also do not burn in sunlight, unlike Zombies and Skeletons do, meaning they will be able to attack the player in daytime too.

Offense
The creepers is a 'kamikaze' style mob, meaning its only attack is to commit suicide. Creepers will start chasing the player once within a range of 16 blocks and will explode when within a few blocks' range. However, they will not explode if the player moves away within 1.5 seconds. The creeper will then continue to pursue the player, until the player move out of its range. It is possible to tell when one is nearing due to the hissing noise it makes.

Defense
A bow should be your first choice of weapon. However, if you are fast enough, it is possible to hit a creeper with a sword without it blowing up. You can also ignite a creeper using Flint and Steel and touching the button to explode the creeper, and then run away before it explodes. This however, will not make it drop Gunpowder, which can be used in making TNT. The player can also try to make it fall into lava or touch cactus if necessary.

Trivia
Creeper
 * Creepers are possibly the most recognized of all Minecraft mobs.
 * Creepers can be very hard to see in large grassy biomes, due to their green color acting as camouflage. This makes them a larger threat in these areas.
 * Creepers were created when Notch tried to make a pig. Notch tried to make the sprite small and fat, but he got the width and height the other way round. So he gave it a different skin and then implemented it.Minecraft_mob_lineup_wallpaper_by_younggeorge-d5rngge.png
 * When Creepers explode in water it can only hurt mob and players, and cannot destroy blocks.
 * As they can explode, they can cause damage to the environment, buildings or ignite other TNT within the range; This cannot happen if they are in water.