Myths and Mains

My first post is going to be on what mythical creatures I chose for the main characters so far!
If you have any questions on why, feel free to ask! (Until I can enable asks, feel free to message me per PM!)

Feliciano & Lovino Vargas - Werewolves
Ludwig & Gilbert Beilschmidt - Demons (Ideas on specific types of demons are encouraged!)
Kiku Honda - Kitsune
Alfred Foster Jones - Harpy
Matthew Williams - Harpy
Francis Bonnefoy - Lan-An-Schie
Arthur Kirkland - Medium
Yao Wang - Nü-Wa/Lamia
Ivan Braginsky - Dullahan or Koschie, is still debated

Any questions will be happily taken!