Walon Vau
Walon Vau was one of the Mandalorian mercenaries recruited by Jango Fett to train the Clone Army. He belonged to the group known as the Cuy'val Dar. The armor he wore was colored black.
Like Kal Skirata, he believed that the clones he trained should be brought up to be Mandalorian warriors. However, he took a different approach. Instead of treating the clones like sons, he taught the Mando way through discipline, and often violence. To teach his clones to be tough, he would often pit one against the other, for melee or even live-fire exercises. He gave them a choice: fight each other or fight him.
Vau trained the commandos in Delta Squad, and gave RC-1262 his nickname ("Scorch") after an ordnance accident that left them both without eyebrows for a time.
(Wookoiepedia)
I used for the custom a Geonosis arena bp Jango Fett figure. It is a bit hard to find pics of this character and his paintwork.
I hope you like the custom guys. A base for the Delta Squad and Vau should follow next weekend (if I can find some time).