Grimlock (Transformers Cinematic Universe)

Grimlock is the leader of the Dinobots who transforms into a mechnanical T-Rex and is part of the Legendnary Knights of Cybertron. Even though he and his friends, Scorn, Slug and Strafe are Lockdown's prisoners who was going to be delivered to The Creators he was freed by Optimus Prime and was tamed by Prime and allied with the Autobots to help them retrieve The Seed and defeat the KSI Decepticons from wreaking havoc in Hong Kong.