Megatron reprograms Professor Sumdac's animatronic dinosaurs, turning them into Dinobots.

Blackarachnia confronts Bumblebee and Bulkhead as they are celebrating their first Halloween.

Blitzwing and Lugnut come to Earth to help Megatron get the Allspark.

When Sari mysteriously disappears, Prowl and Bulkhead go searching for her on Dinobot Island.

Starscream, Lugnut and Blitzwing invade Earth; Optimus Prime makes Sari turn over her Allspark key.

Optimus Prime and his band of Autobots are taken off the job when the Cybertron Elite Guard, led by Ultra Magnus, comes to Earth looking for the AllSpark.

Unaware of the Decepticon activity, the Elite Guard take Optimus Prime and the Autobots back to Cybertron.

Bumblebee competes against the Decepticons in an underground racing competition.

When the AllSpark turns construction vehicles into Autobots, Bulkhead becomes fast friends. However, the Decepticons have other plans in mind.

Prowl and a mysterious Decepticon bounty hunter go after Starscream.

The second-rate villains of Detroit team up to beat the Autobots.

Unlikely matchups! It's Optimus Prime and Dinobot Grimlock vs. Blackarachnia and Meltdown.