The most common appearance of the Matrix.
The Matrix of Leadership, also known as Autobot Matrix of Leadership, Creation Matrix, Autobot Matrix of Power or Matrix of Light is an artifact of power featured in all Transformers media. It is generally depicted as a glowing orb encased in a metal shell with two handles on each side.
Usually carried by the leader of the Autobots, the Matrix was given many different uses and meanings, but for the most accounts it is an artifact that contains the essence of Primus, the god who created the Transformers, and serves as a means to access the Allspark, the afterlife of the Transformer race, through which one can bestow Transformer life or communicate with the deceased Primes. The Matrix is also the only one thing that Unicron truly fears.