Minecraft wiki entry for Ender, associated text: Ender Dragon - a boss mob, also acknowledged as the final boss mob of Minecraft.
Enderman - a neutral mob that spawns in all three dimensions and becomes hostile if looked at by a player or attacked, either by a mob or a player.
Endermite - a hostile mob, spawned from thrown ender pearls with a 5% chance.
Shulker - a hostile mob spawned within the end cities and shoots shulker bullets at players and gives the levitation effect if it hits them.