Here is a a list of Available Masters.

Male:
Dallas Carter Black
Shayne'alann O'Hara
Caelum Reinhardt

Female:
Annie Hastur
Cythoe Thisa Iocnes- ?
Evelaril the Alien
Arietta Jaeger Scarlato
Vixen Nightingale/Wren Knight
Levi Alice Corvin