Bulldog is the vehicle of Boris “The Czar” Bushkin, a big, bald Russian truck driver who joins the cartoon in its racing season. He first appears as a double agent posing as a V.E.N.O.M. member at a demolition derby. His truck is a Kenworth K100 diesel, bluish gray on the toy and light gray in the cartoon, that converts into a half-track tank.
Kenner released it in Series Three in 1987. A collector guide lists twin grill guns, snow blizzard blasters, an armored command post, a chainsaw with a jagged tongue, pivoting seats and a radar disruption shell. In Europe the toy was renamed Bulldoze.
Bushkin wears the Comrade mask, which fires red energy stars to disorient opponents.
In the cartoon Bulldog debuts in episode 66, the first of the ten racing episodes. Bushkin has no other Kenner vehicle. Bushkin is voiced by Doug Stone in the cartoon, according to Wikipedia, and his civilian occupation is truck driver.