Grem is the teritary antagonist of Cars 2.Professor Z, Grem and his partner-in-crime Acer are trying to sabotage the World Grand Prix and the famous race cars competing in it. When Grem and Acer mistake Mater for an American agent with important top-secret information, the ruthless lemons set out on a round-the-globe chase to stop Mater from foiling their evil scheme.
He is at the oil rig in the beginning of the film. Later, in Tokyo he and Acer find the American spy named Rod "Torque" Redline and together they damage him pretty badly. He takes the spy back to Professor Z and he stands by watching as the spy explodes after putting Allinol in him and using their weapon to kill him. Later Grem and Acer chase Mater and Finn McMissile at the airport. They are also seen present at the lemon meeting. Grem and Acer are also the ones who use the weapon at all the races. During the last race they tease Mater for not being able to save Lightning McQueen as they fire the weapon at him, but fortunately it doesn't work. He got beaten up by a bunch of British cars at "Ye Left Turn Inn" after he and Acer crash into each other at the end.
- Top Speed: 91 mph
- 0 – 60 mph: 17 seconds
- Engine Type: 232 c.i straight 6 with one-barrel carburetor
- Horsepower: 90
- Grem is modeled on a 1974 AMC.
- His license plate is WREKD, short for "wrecked".
- On Grem's tires it says "Rolling Stop".
- His license plate is the same as Tyler Gremlin's.
- He, along with Acer, are the first two lemons to be seen in Cars 2.
- There is a costume of him on the World of Cars Online, which you can get from Ramone's House of Body Art.
- In the Cars 2 magazine with the 56 page Cars 2 Movie Comic, when Holley stops him and Acer from getting Lightning and Mater, instead of ending up in "Ye Left Turn Inn," they landed in a garbage truck.
- Grem, along with Acer, Professor Z, Miles Axlerod and Victor Hugo are playable in Cars 2: The Video Game, even though they are villains. However, it could be that they are part of the simulation.
- Grem's LEGO minifigure for some reason shows him with brown eyes instead of green eyes like in his other appearances.
- Grem's name originates from the first four letters of the word "Gremlin" which is the company of the car Grem was modeled.
Weaponry and Gadgets
- Missile Launcher: In the airport escape, Grem reveals a missile launcher on his right side. He launches it at Finn McMissile, but Finn launches a missile at that one and they cancel each other out. He uses it once in the film.
- Deployable Machine Gun: Located on the opposite side of the missile launcher. In an attempt to get Lightning McQueen and Mater in London, he and Acer got out their weapons.
- "Get to the boats!"
- "There he is!"
- "I don't know, Professor."
- "I didn't do nothing! Shh! I'm talking to the Professor."
- "We go to the back-up plan."