Boris and his fellow evil spy, Natasha Fatale, are the arch-enemies of Rocky and Bullwinkle. They both speak with a Russian accent and worked for Fearless Leader. Boris, like many comical cartoon villains, would often create elaborate schemes and traps for his foes, but they would always backfire. He has a black outfit, fedora and small mustache.
Boris enjoys light reading; his favorite book is an anthology of fiendish plans called the Fireside Crook Book. He is also a charter member of the Van Gogh Society, a club whose members collect human ears.
Boris attended USC (University of Safe-cracking) and received his scoundrelship with magna cum louse.