It looks just like what happened to me with my iron. It's probably a stinkbug. Mine didn't come out until it became so waterlogged that it just fell apart in the iron, then it poured out with the water. It took a while and ironing really grossed me out to look at that bug every time! Those stinkbugs like cloth, too. I find them hiding in the folds of fabric I have laying around. Yuck!