Isabet Reau, was one of seventy-five Mandalorian Cuy'val Dar training sergeants for the clone commandos, personally recruited by Jango Fett to help train them. She studied battlefield Techniques and cultures. He is part of the Elite Forces of the Republic set on Entertainment Earth, and part of the Republic Elite Forces: Mandalorians and Clone Troopers pack.
This has been taken from Entertainment Earth
'Isabet Reau is eager to train the clones in the ways of her people, from their battle tactics to their cultural beliefs, so that the greatness of the Mandalorian people will once again sweep across the galaxy with all its power and glory. Isabet includes a blaster, a removable helmet, and a rocket pack.'