Jetfire was among the first of the Seekers, able to travel through space to look for suns to be harvested to replenish the Allspark.
Jetfire served directly under the Prime who would become The Fallen, finding for him various stars to harvest, believing he was serving the Dynasty of Primes interests. Over time, The Fallen began to open up to Jetfire, his most loyal and capable Seeker, telling him that the Dynasty no longer served Cybertron's best interests. Jetfire had unwittingly sacrificed a populated star system under The Fallen's misdirection, and became confused.
Still, Jetfire continued to work with The Fallen, despite his doubts. His master and a small army of Constructicon drones had fashioned a new faction called the Decepticons with the intention of eventually subverting the Dynasty. Jetfire followed them to a desert on Earth to build another star harvester when primitive life made itself known. The Dynasty arrived soon thereafter to put an end to The Fallen's betrayal. Jetfire realized too late that he was on the wrong side, and so The Fallen warped Jetfire and the other "underlings" into orbit so that the Primes could face each other alone. As they fell planetward, Jetfire fought the Constructicons, and was eventually victorious, but with a price. He crashed from orbit into the Earth and laid dormant for thousands of years.
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Transformers: Revenge of the Fallen (2009)
Jetfire was found by Sam Witwicky, Mikaela Banes, Leo and Seymour Simmons at the Steven F. Udvar-Hazy Center, an annex of the National Air and Space Museum, after Wheelie pinpoints the general location of the ancient Seeker. Sam reactivates him with an Allspark, waking him up from stasis lock. After a misunderstanding when the humans saw his Decepticon insignia, Jetfire activates a Space Bridge to teleport Sam and his friends to Egypt, explaining to them the origin of the Primes and the Matrix of Leadership. Learning of Transformers Optimus Prime's existence and death, Jetfire sends them to find the Matrix, which he speculates can be used to revive Optimus (Although it could also be used to power the Fallen's technology).
He demonstrates his immense power as an ancient Seeker when he arrives late in the final battle at the Giza Necropolis, and cleaves his battleaxe clear through Mixmaster and stomps off his head, killing him and saving the human forces nearby, although soon after he is attacked and mortally wounded by Scorponok but manages to easily crush his attacker after recovering from the surprise attack (saying he is "too old for this crap"). Eventually, as ordered, Sam revives Optimus with the Matrix (much to Jetfire's relief) right before the Fallen steals the Matrix to activate the Sun Harvester. Seeing that there might be hope with a living Prime, Jetfire then acknowledges that he had never done anything "worth doing" until he had fought on behalf of the Autobots and sacrifices himself by tearing out his spark in order to allow for Optimus to use his parts to engage the Fallen. Thanks to Jetfire's sacrifice, Optimus proves to be more than a match for Megatron and the Fallen combined and defeats Megatron before killing the Fallen. Optimus then discarded Jetfire's parts.
Powers and Abilities
Space Bridge Formation: Jetfire mentioned the Space Bridge by name shortly before he did a really half-assed job of throwing himself and the rest of the heroes halfway across the world to Egypt, wrecking Sam's hand in the process (Jetfire wasn't entirely sure they were still on the right planet). The even-more-ancient but significantly less senile Fallen, one of the original Primes, shows a similar ability where he teleports across short distances, seeming to use it as a form of flight. Revenge of the Fallen
Somewhere buried in this desert our ancestors built a great machine, it harvest Energon by destroying suns (Sam: Destroying suns? Leo: You meaning blow them up?) Yes. You see in the beginning, there were seven Primes, our original leaders. And they set out in the universe seeking suns distances to harvest. The Primes set out with one rule, Never destroy a planet with life. Until one of them tries to defy this rule and his name forevermore was The Fallen! He despise the human race. And he wants to kill you all by turning on that machine. The only way to activate that machine with the legendary key called the Matrix of Leadership. A great battle took place over possession of the Matrix. The Fallen was stronger than his brothers. So they have no choice but to steal and hide it from him. In the ultimate sacrifice, they gave up their lives to seal the Matrix away in a tomb made from their very own bodies. A tomb we cannot find. Somewhere buried in this desert, that deadly machine remains. The Fallen knows where it is. And if he find the Tomb of the Primes, Your world will be no more.
~ Jetfire's story
A living Prime. Ha! Ha! Oh, I don't believe it!
~ Jetfire after Sam revived Optimus Prime
In Revenge of the Fallen, Jetfire seems to be the opposite of the Fallen. For the Fallen, he was one of the Primes before his misanthropy led to his downfall, thus making him form the Decepticons. Jetfire, on the other hand, was a former Decepticon whose change of side (becoming an Autobot) was by choice, thinking that being in the life of hatred is not worth for him.
Jetfire is also the opposite of Sentinel Prime from Dark of the Moon. Jetfire was a Decepticon who later joined the Autobots by choice, while Sentinel Prime was an Autobot who sided the Decepticons through betrayal.
Jetfire in Egypt.
JETFIRE Transform - Short Flash Transformers Series
JETFIRE & OPTIMUS Combine - Short Flash Transformers Series