User blog comment:UTC Scrappy/Death Battle Infinite History Mentors' Personal Rivals/@comment-25172038-20181108210004

I am going to give you some ideas for Noel and Aigis when they both appear in Death Battle.

Noel Vermillion -Tsubaki Yayoi/Nu-13/Hades Izanami

Aigis - Ryoji Mochizuki/Death/Nyx Avatar

Also I am surprised that you didn't add Jin Kisaragi and Ky Kiske for Ragna and Sol respectfully since the former two are considered rivals to the main heroes.