An enemy in the PC game Minecraft
. Creepers are quiet and do not make any noises until they are very close to you. When they are next to you they will make a "Ssssss" sound, much like a fuse on a bomb, and then explode anything in your area, including you. If you kill them, they sometimes drop sulphur.
Damnit, that creeper blew up part of my house last night. Now I have to fill up the hole in my bedroom.