They will mimic the appearance of those he meets as well as their voice… he acts friendly to get you to lower your guard and once that happens he would strike. He is immune to any form of transfur due to his unique cell structure. He acts friendly for the most part… if you are around him long enough you will start to feel unsettled… he will also try to mimic the way you talk, he also mimics any strange quirks you have, like multiple voices. If asked it’s name it will say the other persons name.