Taken:
Luke:taken by Cynder  (from CynderBlack3)
Future Luke: taken by Ryugia (from Son-Azuki
Leo: taken by Lilliana from (Son-Azuki

Single:
Aikon
Taro
Zarro
Salzeo
Zyon
Luke Black
Drayon
Kryto
Storm
Salzar
Salakion
Xyrex
Sora
Xeno Luke
Axel
Yamoshi
Raven
Ace
Jake

(You guys can find these characters throughout the books I've made)