Grindor is a supporting antagonist of the Transformers franchise. He appears as a minor antagonist in Transformers: Revenge of the Fallen, but he has a more important role in the game based on the film.
He is one of Megatron's most loyal Deception minions, acting as a genius tactician and heavy weapons specialist. Even for a thirty foot tall robot, Grindor is considered extremely dangerous and physically strong.
He was voiced by Frank Welker in the film.