Hello Psilocybin, The iron golem will be still alive IF you summon it first... when you enter a game make sure to summon the Iron golem there will be no problem to summon other golems after it make sure though you summon only 1 iron golem, after you have to exit the game re-enter a game and the iron golem will be there next of you .if you have some trouble pm me in game I will help you.