User blog comment:Mnzombie/Your Peerage/@comment-162.202.198.72-20130912055001

Tiamat can be chosen because Tannin was revived as Devil by a Evil Piece because he is a Dragon King, and Tiamat is a Dragon King herself but she is considered more powerful than Tannin, and Karasa is a Ultimate Rank Devil in power because she is a Nine Tailed Fox.