Which Autobot is the leader of the Dinobots?

The Autobot who leads the Dinobots is Grimlock.

Grimlock is usually portrayed as the Dinobots’ commander across major Transformers versions, especially Generation 1. He transforms into a Tyrannosaurus rex, while his fellow Dinobots take other prehistoric forms. His immense strength and aggressive personality make him an obvious battlefield leader, even though his relationship with Optimus Prime is often argumentative.

Generation 1 Grimlock is famous for speaking in the third person, using phrases such as “Me Grimlock,” and for treating humans and weaker Autobots with contempt. That arrogance is balanced by his loyalty to the Dinobots and, in many stories, a growing willingness to cooperate with the wider Autobot cause.

A frequent mix-up is choosing Swoop, Sludge, or Slag, all of whom are Dinobots rather than the group’s leader. Continuities differ in their origins and characterization: the original comics and cartoon do not tell exactly the same creation story. Grimlock’s dinosaur form and leadership role, however, remain his defining traits.