In Revenge the the Fallen we involved know the Optimus is a Prime. Yet if Megatron is Optimus"s brother, wouldn"t that make the a prime too?

So my question is usually this, is element some kind of bloodline (ummm, oil-line?) among the Transformers, or is it a title?

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Speaking strictly around movie canon...

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Regarding The Primes (per TF wiki):

Eons ago, the AllSpark produced thirteen beings, the very first Cybertronians, who had actually the capability to move in between dimensions. <...>

According come Jetfire, the empire of Primes was created by the first Thirteen Cybertronians. These beings might not transform, but they and their transforming descendants possessed powers beyond that the the average Cybertronian.

But no every Transformer is a "genetic" descendent of the Primes. The Primes were simply the thirteen originals created.

They quickly realized that the AllSpark"s power, though vast, was no infinite, and also required the power of stars to be replenished. When a surrounding star go nova, the AllSpark produced a worker race, the Transformers, that would assist the empire in replenishing the AllSpark.

Sentinel Prime to be not among the original thirteen. He was a direct descendant.

Sentinel Prime was a straight descendant that the first Cybertronian, Primus, and was thought to be the critical of the Primes.

In the movie continuity, Optimus Prime to be originally named "Optimus". He and Megatron functioned with Sentinel Prime.

was the humble leader the Cybertron"s scientific research division, which learned the AllSpark, and also were protected by mr High Protector Megatron"s military. <...>

was when brothers-in-arms v Optimus and also a student of Sentinel Prime, appointed to be Cybertron"s Protector and also commander of its Defense Force.

But over there was more to Optimus than meets the eye. Optimus is in reality a direct descendant of one of the Primes (Prima, to it is in specific).

It was Optimus Prime"s ancestor who lastly vanquished the please to another dimension in the battle for the procession of Leadership, yet his orphaned descendant who was concealed away from the Fallen grew up through no understanding of what that was.

Sentinel element told Optimus of his theories around Prime"s lineage.

Though Optimus was also humble come accept, not believing Sentinel"s claims around his heritage, Megatron overheard their conversation and also became jealousy of his "brother." Sentinel formulated an additional plan for Cybertron"s future: it would certainly be administrate by Optimus"s Science department and Megatron"s Defense Force. By having actually Optimus inspection the stays of the Primes" civilization, it would certainly encourage the to think in his lineage.

Eventually, Optimus finds proof that he is a descendant of a Prime. It is then that the other Autobots begin addressing him as such, and also he becomes known as "Optimus Prime".

Back in ~ Burthov, he come upon Ratchet, Arcee, and Elita-One scanning the piece of the other artifacts. Arcee then discovered that the pieces all had the exact same symbol top top them, and that the same symbol to be on Optimus" head. Ratchet claimed that the symbol to be proof that the empire of Primes, and it shown Optimus himself was a Prime. Ratchet and also the various other Autobots began to dub him "Optimus Prime" Optimus additionally informed Sentinel of the marking on his head that showed he was appropriate all along: he to be a element too.

Megatron was no a direct descendant of a Prime. The was jealous of Optimus.

But Megatron resented his comrade, discovering he was a Prime and also therefore Sentinel"s favored son.

Even still, Optimus and also Megatron led Cybertron for a time.

For 2 generations, Optimus and Megatron ruled Cybertron together. The 2 personalities created a balance; Prime was fair while Megatron to be firm.

In one of the comics, Barricade division the fourth wall surface and describes that the two space not really "brothers" despite each one regarding the various other as one.

However, in the twelfth problem of Titan"s Revenge that the fallen comic, "Barricade" notified readers the Megatron and Optimus weren"t related, the term "brother" to be just since they"d well-known each various other for therefore long.

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Putting this all together, we"ve painted the photo that Optimus and also Megatron were when close allies. They worked together under Sentinel to bring peace come Cybertron. While Optimus to be a descendant of a Prime, Megatron was not. Still, from years of friendship and also being allies, they taken into consideration each various other as "brothers" in spite of not gift "genetically" related.