<Li> Mark Ryan as Lockdown An extremely powerful, relentless, heavily enhanced, ruthless Cybertronian bounty hunter who transforms into a grey 2013 Lamborghini Aventador LP 700--4 Coupe and is hired by the mysterious Creators to bring Optimus Prime back to them . </Li> <Li> Reno Wilson as Brains A former Decepticon drone turned Autobot who survived the Battle of Chicago and has lost his right leg . </Li> <Ul> <Li> Bumblebee An Autobot scout and Optimus Prime's new second in command, who communicates through voice clips and sound bites via his radio who transforms into a modified 1967 Chevrolet Camaro and later, a 2014 Chevrolet Camaro concept . </Li> <Li> Grimlock, the leader of the Dinobots who transforms into a mechanical horned, fire - breathing Tyrannosaurus . </Li> <Li> Strafe A Dinobot who specializes in assault infantry and transforms into a mechanical two - headed, two - tailed Pteranodon . </Li> <Li> Slug The Dinobots' destroyer who transforms into a mechanical spiked and bestial Triceratops . </Li> <Li> Scorn The Dinobots' demolition specialist who transforms into a mechanical three - sailed Spinosaurus . </Li> <Li> Stinger a human - made KSI Transformer modeled after Bumblebee who later becomes a Decepticon and molecularly transforms into a red and black 2013 Pagani Huayra . </Li> <Li> Junkheap A human - made KSI Transformer who later becomes a Decepticon under Galvatron's control and molecularly transforms into a Mack garbage truck of Waste Management, Inc . </Li> <Li> "Traxes" A human - made KSI Transformers modeled after Roadbuster who later becomes a Decepticon under Galvatron's control and molecularly transform into red, blue, black or white Chevrolet Traxes . </Li> <Li> "Two - Heads" A two - headed human - made KSI Transformers modeled from the remains of Shockwave who later becomes a Decepticon under Galvatron's control . </Li> <Li> "KSI Bosses" A human - made KSI Transformers modeled after Soundwave who later become Decepticons under Galvatron's control . </Li> <Li> Steeljaws Savage techno - organic wolf - like minions of Lockdown . </Li> </Ul> <Li> Bumblebee An Autobot scout and Optimus Prime's new second in command, who communicates through voice clips and sound bites via his radio who transforms into a modified 1967 Chevrolet Camaro and later, a 2014 Chevrolet Camaro concept . </Li>

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