About 10 years ago, the Prostaff Team was formed. The Prostaff Team members are Jurgen "Jogi" Zank, Bart Bellon Frank Rottleb, Michael Kaiser, and Jens Wicher. Bart Bellon is the founder of the Prostaff Team, and while all the Prostaffs share some of Bart's philosophy, each Prostaff has his own individual training methods. Think of it as a Venn Diagram with five circles, Bart's philosophy being the circle in the middle and the other four circles having varying degrees of intersection with the middle circle.