Arcade Final Boss?

Pretty sure everyone has seen the Arcade Ahri log-in screen. Therefore it has come to my attention that in the right corner there is map/progress map , there we see Ahri at the beginning, but who is at the end? The Face of the boss? Could it be a new skin for Yorwick? Or a new skin my Jhin? since those are the two champions who have not received any recent skins. Just a thought that came to mind.