Colossus XXL is a large construction vehicle who lives near Carburetor County.
In Cars 2, Lightning McQueen and Mater approach the Colossus while they are playing. They honk their horns to tip him, causing him to tip backwards and emit a burst of smoke from his exhaust pipe, blowing Mater and McQueen away.
- Mater: "Heh, heh."
Lightning McQueen: "Wow. Yeah, uh. I don't know. Do you think...?"
Mater: "This is gonna be good!"
(Mater honks his horn and Lightning revs his engine. Colossus XXL tips over and hits the ground hard)
Mater: "Ah, ha, ha, ha, ha, ha."
Lightning McQueen: "Ha, ha, did you see that?"
(they stop laughing when they hear oil from the exhaust)
Mater: "Uh, oh. This ain't gonna be good."
(Colossus XXL backfires a burst of smoke from his exhaust sending Lightning McQueen and Mater away)
- —Lightning McQueen and Mater tip Colossus XXL.
- It is unknown what animal he seems to represent (as making a moo similar to the tractors (cows)), as there is no such thing as a giant animal.