Optimus Prime the fearless but compassionate leader of the heroic Autobots.
Upon the destruction of their planet Cybertron. The Autobots and Decepticons sought the power of the cube. After discovering that the cube was on Earth Megatron followed it and crash landed on the planet. Lucky for us he was frozen in ice and his quest to obtain the cube was put on halt. Optimus and several Autobots also came to Earth to stop Megatron from getting his hands on the Cube. Thus the continuation of the Cybertronian war here on Earth. With the help of the boy Sam Witwicky and several USAF personnel lead by Capt. Lennox, the Autobots prevailed and Megatron was entombed in the deepest part of the ocean. [story from the movie Transformers 1]
On the second movie Revenge of the fallen. It was revealed that in ancient times humans and Cybertronians had already made contact with each other. During this time one of the Primes became corrupted and sought the power of the Matrix. The other Primes sacrificed their life and bodies to hide the Matrix to prevent the Fallen from gaining its power. At present time, the Autobots formed an alliance with the humans creating the NEST. This group hunts down the remaining Decepticons here on Earth. Secretly the NEST was also task to safe guard the remaining shard from the Cube. Little do they know that a tiny piece of the Cube was in the possession of Sam. After the Fallen revived Megatron and took the shard. They also managed to kill Optimus. Thus the quest to find the Matrix of leadership started. Sam together with his friends searched for the Matrix in order to revive the last of the Prime's. To cut the story short they found the Matrix and revived Optimus Prime. Thus defeating the Fallen. But Megatron and his troops escaped and is still free to plan their revenge.
Several movie posters of Transformers: Dark of the moon directed by Michael Bay
Optimus Prime as shown in the movie
Here is Hasbro's Optimus Prime
Closer look at the head with light up eyes
Optimus with his hooks
Side view of the figure
Optimus transformes into a truck. Here is the GMC truck used in the movie
Like in the movie the figure can be transformed into a truck