Grimlock

Grimlock is the name of several fictional robot characters in the Transformers robot franchise. He is usually portrayed as the leader of the Dinobots, a subfaction of Autobots who can transform into mechanical dinosaurs. Grimlock's usual dino form is that of a Tyrannosaurus Rex. In 2007, USA Today polled people as to which Transformer they want to appear in the second installment in the Transformers film series; Grimlock came in tied for second with Devastator.

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 * Grimlock is a guest character in Marvel's Spider-Man: Webbed Champion, voiced by Travis Willingham. He appears in the crossover arc "Legendary Universes" alongside his fellow Dinobots. Officially appearing in "Legendary Universes, Part 4: Heroes in Disguise", he and the Autobots help Spider-Man's team defeat Megatron and his Decepticon faction and Predaking's Kree Armada and solve the origins of Arsenal's robot body. During the episode, he forms a very close friendship with Speed and Ant-Girl, as Spider-Man remarks that Grimlock is "fulfilling children's classic dream of seeing a dinosaur". Grimlock and his fellow Dinobots later appear in "Part 6: Ultimate Alliance", where they join the final battle against the Regent and his army from the Negative Zone.