Transformers Prime

The Autobots' medical officer, Ratchet has a dry wit, often giving his wounded comrades a hard time for taking hits he somehow avoids. With the Energon supplies becoming less and less, he works to find new ways to make do, and he'd really prefer if the Autobots didn't risk injury (or worse) to protect humans. He'd also prefer the humans weren't brought back to Autobot Outpost Omega One but since he is unfamiliar with human tech, he needs Raf Esquivel to help him out. However, for all his views on humans, deep down Ratchet admires what the tiny fleshies bring to the fight. Maybe he'll even warm up to them.

Optimus Prime's best friend, and de facto second-in-command, you'd be hard-pressed to find another Autobot who loves his leader as much as he does. Yet this is not to say Ratchet has blind faith in him; Ratchet resents Optimus' lack of action over the years regarding ending the war and many missed chances to kill Megatron. He's as flawed as any normal being would be, and a huge vice is his Cybertronian pride. At least once, it's nearly cost him the life of a friend. Furthermore, his grief for his destroyed home world is what drives him. He didn't take the loss of Cybertron very well, and would do almost anything to get it back some day.

Bumblebee is an Autobot warrior and the former scout of Team Prime, as well as the former guardian of his human friend, Raf Esquivel. in Transformers: Prime. Bumblebee was a very important member of Optimus's team during the Great War and was with Optimus for the longest out of any Autobot, excluding Ratchet. Bumblebee went with Optimus, Bulkhead and Ratchet to Earth in an attempt to stop the Decepticons from draining the planet's energy and taking it over. At the end of the war, Bumblebee was the one to kill Megatron, the very same Transformer who took away his voice since the war. However, Megatron was revived by Unicron shortly after, who used his body as a vessel to attack Cybertron. With Optimus missing in action at the time and Ultra Magnus badly wounded, Bumblebee became temporary leader of the Autobots. Optimus returned and defeated Unicron with the help of his team. Before Optimus became one with Primus, Bumblebee promised Optimus that they will keep the peace in his memory before Optimus left. Optimus gave one last smile to them before going into the Core. When the Sparks burst from the Well, the team watched as the sparks fly out to bring life to their home again, including Optimus's own spark.

Years after the war finished, Bumblebee became a high ranking police officer, but was still praised as a war hero, with a partner police cadet Strongarm, but he began to see visions of Optimus leading him back to Earth with Strongarm, street punk Sideswipe and Mini-Con Fixit where they discover a crashed Decepticon ship with numerous fugitives at large. A dinobot named Grimlock, who was a prisoner on the ship, teams up with them as well as humans Denny Clay and his son Russell. Bumblebee takes leadership in his new team to hunt down the Decepticon fugitives on Earth. On some occasions, Bumblebee would mess up on his battle cries, which would make his team laugh or not impressed.

Bulkhead looks huge and menacing, but is actually quite caring and gentle-souled. Though he's neither a brainiac nor a fast runner, Bulkhead is one of the most sturdy members of Team Prime. He's afraid of hurting things smaller and more fragile than him, but his new human friend, Miko Nakadai, has helped him grow past that. He has a low tolerance for jerks and bullies, and is quite happy to let people like that stew in the trouble they've made for themselves, but his better impulses—or at least, needling from those around him — always sway him into helping in the end.

For all his sweetness, he's still a Wrecker through and through. Yet, despite participating in several major battles and campaigns, his past career has left some painful psychological scars. Being a part of the Autobots' black ops team means you have to do the dirty work, and Bulkhead's seen many horrors and friends meet a bad end. Though saddened by his traumatic experiences with the Wreckers, he's joined up with Optimus Prime to end the fight with Megatron, for the sake of all his brothers and comrades.

A former scout on Cybertron before the Great Exodus, Arcee is the least physically-imposing of Optimus Prime's crew, but she's also Optimus's most reliable soldier, his go-to gal when he needs someone he can count on. Whatever she lacks in physical form she more than makes up for it in force of personality. She is tough as nails at all times, always ready with a snarky quip even in the face of deactivation, not afraid to bend the rules every now and then, and seemingly never, ever scared.

And while that is largely true, and makes her an incredibly dangerous opponent (especially in melee combat, her specialty), that force of will is also a bit of a front. The loss of a partner back on Cybertron rattled her, leading her towards a path of going it alone. And when she finally started opening up to another partner on Earth, losing him shook her to her core. To then be immediately saddled with the task of being the "guardian" for Jack Darby, one of the locals accidentally caught up in the struggle on Earth, well, let's just say she was less than thrilled about that.

Okay, she was openly verbally hostile to Jack over the whole thing, but her loyalty to Optimus kept her from refusing the task. Like it or not, she's his guardian, and she's going to protect that boy's life... with her own, if she has to.

Slowly, but surely, Arcee is coming around again and facing her past demons. Jack's bravery and ingenuity even when in mortal peril is growing on her. Who knows. He might make a good partner.

Optimus Prime was the last born of the original Thirteen Transformers. His spark was the most like their progenitor Primus, its frequency nearly identical. He was the mediator and visionary of the group, passing among them all as a calm, inspiring, thoughtful, unifying and well-liked friend. It was his unique spark and his inspiring reassurance that "All are One" that allowed the Primes to rally and succeed in their battle against the Chaos Bringer Unicron. When tragedy at last ended the era of the Primes and brought forth the new race of lesser descendant Transformers, he alone chose to be reborn in the Well of All Sparks as one of them, that he might know them and their needs more completely.

All memory of his past life gone, he took the name Orion Pax and sought his way like any other robot on the new world. Eventually, he found his place as a simple data clerk, satisfied with his job. He was always anxious of the inequality amongst Cybertronians and thus, after gaining inspiration from an outspoken gladiator named Megatron's call for an upheaval of Cybertron's society, took a stand to rid the oppressive caste system which hindered the freedom of all the sentient beings on Cybertron. Little did he realize that his instructor, the master archivist Alpha Trion, was also one of the Thirteen and knew of the secret within the data clerk. Once Pax and Megatron discovered they did not have as much in common as they once believed, the lowly data clerk was promoted by the High Council to be the next Prime. With the claiming of the Matrix of Leadership, Orion Pax became Optimus Prime once more, regaining his memory and rising to lead his people.

Over the centuries, loss and war have led Optimus to appear stern and serious to most. But scratch the surface, and you'll find an individual who greatly cares for his fellow living beings, with a warmth and kindness his closest friends can rely on. You'll also find regret over the loss of a comrade to darkness.