"We're here to meet a friend. Comin' on the train."
Not much is revealed about Bubba's history prior to his membership in Toecutter's Armalite Gang. It has been theorized that he was once MFP: his costume is a replica of the uniform and his Smith & Wesson 28 is also the Force's standard issue sidearm. He appears to be Toecutter's second in command and clearly dislikes playing babysitter to Johnny the Boy. Bubba's character is quiet and serious, which lends to his intimidating stature. He seems to prefer ranged weapons and does not directly participate in most of the melee violence inflicted by the gang. He does however run-over Max's arm after shooting him in the leg, inflicting the serious injuries which are still evident in The Road Warrior. Bubba meets his demise at the end of Max's sawed-off shotgun.
Bubba's costume consists of a black oil-skin jacket (replica of the MFP jacket with no shoulder caps) with elbow patches, and black oil-skin trousers with knee-pads. When riding he wears a wide elastic kidney-belt over his jacket and a silver full-faced helmet. Under his jacket he wears a tight, black tee-shirt (possibly a woman's) and a beaded necklace. His gloves are brown leather, possibly Hondaline. 
Bubba is a very good shot with a pistol, he is seen using both a Smith & Wesson Model 28 .357 magnum revolver and a pre-WWII Mauser C96 Broomhandle.
Bubba was played by Australian film and TV actor Geoff Parry, who notably worked with Mel Gibson again in Peter Weir's Gallipoli in 1981.
He inspired the villain Vile from the videogame Mega Man X, however, Vile resembles Boba Fett from Star Wars.
Geoff's family refers to him affectionately by his nickname: "Bubba."