Bubba first appeared when Mater, Jud, Buford, and Cletus found Mater's hood. He took Mater's hood. He and his friend were playing with it. Mater and his cousins went after them trying to get it back. Finally, Bubba and his friend got bored of the game, so they tossed it in a tree, but luckily, Red got it down with his hose.
He later appears when Mater and his cousins head back to town where he challenge's Mater to a race, and the loser will buy the winner a tank of gas. Then Mater had an idea. He decided that they should race backwards, because he knew that Bubba can't race backwards.
The race track went down Main Street, around the statue of Stanley twice, then back down Main Street to the finish line. Bubba started out in the lead, but he lost control when he went around the statue of Stanley. Mater passed him, and won the race.
In Cars Race-O-Rama, Bubba first appears in the cut-scene for Smash Up 1, where he introduces himself and his friends, Tater and Tater Jr., to Mater. He tells him that they agreed to race in the Rust-bucket Stadium for the towing rights to Radiator Springs a long time ago.
He later appears in the cut-scene for Smash Up 2, where he scares Mater, and Mater says that the only thing that scares him is the ghostlight. Then Bubba was about to say something, but then Mater interupted saying that his name rhymes with Tater. Then Mater, Tater, and Tater Jr. went to find more things they rhymes with their names. Then Bubba said "Those 3 couldn't spell I.Q. if I started from the I."
He later appears racing in Bubba's Bucket Bash and in the end-scene, where he gets so angry about losing. He even got angry at Tater and Tater Jr., because they had fun, but they lost. They thought that because they made a new friend, and their new friend won, and since their names rhyme, they think that they also won. Then Bubba drove away saying to Mater that he'll get revenge.