A hostile mob in minecraft relying on the art of stealth to brutally murder players in an explosion like that of TNT. It's homicidal/suicidal nature and reputation make it an icon for the game. It's about half as slow as the player and mobs such as spiders and zombies, but is slow because it uses stealth over speed. Creepers are recognized by almost everyone who knows what minecraft is.
Player: Man, i just finished this marvelous house!
Creeper: Silent, then B-SSSSSSSSSS
Player: OH SHI-
BOOM!!!! player and creeper killed in explosion