Yami Hisashi
Yami Sukehiro
Yami Ichika
Kiyama Koyori
Ryuya Ryudo
Jeimi
Taoru
I can't find any good pictures for other characters so just imagine them. Unfortunately, I also can't draw and there are only a handful of good arts that can represent the characters. I hope these can help though.
P.S.: The arts above are not mine.