Optimus Prime is the leader of the Autobots who transforms into a semi-trailer truck and is the gym teacher of Hub High. He gave the Rescue Bots their mission and mainly appears via view-screen. In "Bumblebee to the Rescue", he briefly assigns Bumblebee to observe the Rescue Bots and their human allies in action. In "It's a Bot Time" and "Bot to the Future," Optimus and Bumblebee travel back in time to aid the stranded Rescue Bots, only to return to an altered present. There Optimus and Bumblebee take on Dr. Morocco's MorBots before traveling back in time again to correct the past, thus restoring the proper present. He later returns in "What Lies Below" and "What Rises Above," where he comes to Griffin Rock after Chief Burns' brother Woodrow inadvertently discovers a deposit of Energon beneath the surface. Like the Rescue Bots, Optimus is still trying to grasp human nature, comparing the construction of an artificial volcano to the design of the pogo stick. However, he has gained some knowledge of human customs as well. After the group is separated below ground, Optimus and Heatwave work together to find the others, and Optimus expresses his confidence in Heatwave's ability to take on new responsibilities. In "Changes," Optimus Prime trains Heatwave into harnessing his energies for a new vehicle re-scan. In "Land Before Prime," Optimus Prime arrives on Wayward Island to help the Rescue Bots. He scans Trex as a secondary form where gains a Tyrannosaurus form (with this form being referred to in the toyline as Optimus Primal). This makes him a Triple Changer as he states that scanning anything techno-organic might have unpredictable results. It is in this form that Optimus Prime learns that the dinosaurs were protecting their young which are trapped underground. After the hole to the prehistoric cavern has been sealed, Optimus Prime starts to show signs of getting used to his Primal Mode. In "Big Game," Optimus Prime works to get control over his Primal Mode where it causes the Rescue Bots to chase him around Griffin Rock. He is captured by Colonel Quint Quarry and is hunted on Quarry Safari Land with Cody still inside him. Fortunately, the Rescue Bots determine that his loss of control is due to low Energon reserves, and are able to replenish his energies and restore him to normal.