Optimus Prime ID Number - MA-01 Supreme Commander and leader of the Autobots. Transforms into a Peterbilt 379 semi-truck with a flame pattern. Armed with energy blades and other weaponry, he is a leader who fights on the front lines rather than just giving orders. His motto is "Freedom is the right of all sentient beings," and he is willing to sacrifice himself to protect humanity. His height in robot mode is approximately 8.5m.

Bumblebee ID Number - MA-03 Autobot scout. Sent ahead to protect Sam. Transforms into a yellow Chevrolet Camaro. His weapon is a plasma cannon on his arm. He initially disguised himself as a second-generation Camaro but rescanned a newer model halfway through. His vocal processors were damaged in battle before arriving on Earth, so he communicates using the radio when he meets Sam. He is the youngest member of the team, often showing a comical and expressive side. His height in robot mode is approximately 4.9m.

Ratchet ID Number - MA-02 Medical officer and scientist. Transforms into a neon green Hummer H2 search and rescue vehicle. He fights Decepticons using surgical hammers and rotary cutters with great skill. He can be somewhat lacking in delicacy at times. His height in robot mode is approximately 6.0–7.3m.

Jazz ID Number - MA-04 First Lieutenant. Transforms into a silver Pontiac Solstice GXP. While all members learned human languages from the internet, he specifically picked up slang-heavy speech. He is the smallest member of the team but fearlessly challenges enemies. He shows a deep care for his comrades, such as worrying for Bumblebee when he is captured by Sector 7. Due to his brave nature, he even takes on the resurrected Megatron using martial arts. His height in robot mode is approximately 4.6m.

Ironhide ID Number - MA-09 Weapons specialist. Transforms into a black GMC Topkick C4500. He has a long history with Optimus Prime but initially feels uneasy about the presence of humans. A professional combatant who masters heavy weaponry like the cannons on both arms. His height in robot mode is approximately 6.7m.