Creeper

Creepers are one of the most unique and iconic hostile mobs found in Minecraft. A Creeper can easily be recognized by its tall vertical structure (roughly the size of a player), green, pixelated skin, and four legs. It is possibly the most dangerous enemy in the game, as it is not affected by sunlight (but it can despawn after a while), which makes it a constant threat as it silently roams the map, searching for a player to explode upon. It should be noted, however that most Creepers do de-spawn during the day, along with Spiders. It is often used as the game's mascot by Mojang.Creepers don't deal damage in water.