Former Grand Master of the Sons of the Moon
Grandmaster Zimmerman was the head of the Sons of the Moon as they were brought into being. He was the finder of the first tear of the Moon. From the instructions given, he founded the current order of The Sons. Whilst retrieving a Tear, he also came back to the Monastery with the Shifter brothers and brought them up as Sons. He later went missing searching for another Tear of the Moon.