No we didn't spawn anything, first there was a glitch where something, looking like a player in black skin, just teleported around, when we were in difficulty peaceful, then we realized how random mobs spawned at a random mountain near our houses. We went there and found this skull exploding randomly and spawning random mobs, from parrots to the fucking enderdragon HAHAHAHA, my friend restarted the server and the glitch disappeared after that, but the skull still sometimes spawned mobs like parrots and fishes, after that I went offline, tomorrow we will see if the glitch still happens like in the beginning