Creepers are hostile mobs that can kill you when they explode. When you are in CreativeMode, you have to punch one and they will explode. In Survival , they will hunt you down and kill you when you least expect it. Creepers can stop trying to blow up when you run away, then they will follow you againHostile mobs that come out at night.Avoid at all costs. Unlike Zombies and Skeletons , Creepers will not catch fire in direct sunlight, meaning they can wander around unharmed any time of the day until it is killed or despawns. However, the creepers will still be aggressive during the day.
Creepers spawn in the overworld at night and in locations with a light level of 7 or less, just like regular hostile mobs. They are especially dangerous as they are almost completely silent (except for footsteps and their hissing noises when ready to explode), and their explosion is devastating at short range.