This is how he looks, the other one is Triniel.
https://aion.plaync.com/board/notice/view?articleId=6329747c63ab6036fee71139
We knew Kaisiniel and Marchutan since 3.0, but after 8.0 they revealed Nezekan, Zikel, Yustiel, Lumiel and most recently Vaizel and Triniel
Nezekan and Triniel appeared during the 4.0 campaign, but their models looked more like placeholders.
There was also this image that was on the Korean website sometime during 4.0 that showed the empyrean lords.
Vaizel is the 4th Starting from the left.