So there was supposed to be a snake on Erik's jacket?
See the top is the oringal manga from Fairy Tail chapter 486 where Erik has a snake on the back of his coat. Also has his snake pants. Other than that everything is else is the same. Unless you count Macbeth’s checkered pants. The manga is very weird at times to give such dress codes for characters. With anime they try to do the least undetailed stuff as possible if they can get away. I would have loved to see that snake on Erik’s coat.