Hopefully, he won’t appear and won’t get mentioned because there is no need to have the BIG BAD showing right away … if you want the series to be rushed to end and skip important plot points just so you can see him then you are really dumb, we don’t normally get series like this animated so we better enjoy it as much as possible… this is not marvel where they show you who will be the bad guy of the story at the start, here you must have patience and enjoy the ride there’s plenty of bad guys to fill the role