Matrix of Leadership

History
the Matrix of Leadership was an artifact worn by the leading Prime. It was given to the first Prime, Prima by Primus. At this point, it was called the Light Matrix. But because of its enormous power, Prima tasked Solus Prime to make a shell for it. This was a golden shell with silver handles. Prima then put it in his chest for safekeeping. This gave it the name Matrix of Leadership.

When The Fallen rose, he tried to obtain the Matrix, but he failed because of Prima and his brothers. The Fallen was defeated and not given to any other Prime before Prima died. At some point, Prima tried to make Vector Prime take the Matrix of Leadership, but Vector denied the request. He felt it was a heavy burden to carry. Instead, it was given to Guardian Prime. Guardian Prime wore the Matrix for two years until he realized he wasn't worthy and not a real Prime. Because of this, he gave it back to Vector Sigma.

It wasn't until the Autobots were about to lose the Matrix showed itself again. The commander, Optimus got the Matrix and was chosen to be the first real Prime since the Thirteen. Now, Optimus Prime kept on fighting as he became the leader of the Autobots. Optimus had the Matrix of Leadership when he left Cybertron in the Ark. It is unknown what happened to either Optimus or the Matrix after that.