New bosses are in EMC and they are harder than ever! I realy need info aout these bosses so everyone can fight them with ease! All innfo about new mobs are exepted!
There is a guide that JackBiggin made, and some people put more info in the replies. http://empireminecraft.com/threads/guide-the-survival-update.26553/
All the bosses spawn enraged mobs of their type. A marlix spawns enraged Skellies, and a momentus spawns enraged zombies. There are enraged creepers, but it is still publicly unknown if there are creeper bosses.