Dynasty of Primes

The Dynasty of Primes were six of the seven Primes and the original leaders of the Autobots. 17000 BC in Egypt, they were searching the world rich with raw energy for Energon. They built the Solar Harvester to create Energon by destroying suns. However, due to its purpose, the Primes set out in Earth with one rule "Never destroy a planet with life." Until one of them defy this rule is called forevermore known as "The Fallen". The Primes fought against their fallen brother and defeated stole back the Matrix of Leader from him and buried themselves a tomb made from their own body to seal away the Matrix.

After Megatron killed Sam Witwicky, The Primes in his vision, revealed Sam the secret the Matrix of Leadership was not found but earned and fulfilled his destiny to return and revive Optimus.