Nightwatch Optimus Prime (Leader Class)
"Optimus Prime prefers a straight forward battle, in which opponents can look one another in the eye and know that what they do is for real and forever, as adversaries should. When fighting an enemy like the Decepticons however, he knows that more subtle tactics are often called for. Using the new powers granted him by the infusion of AllSpark energy, he is ready for even the stealthiest mission. The darker colors are sensor transparent, letting his slip in unseen, often even directly under guards. New servos in his joints move him silently across the ground, and AllSpark powered punches let him take out enemy troops without a single pulse from his Ion blaster.
Features flip down Ion blaster that launches a missile, and electronic horn and lights."