Takara Tomy Masterpiece MP-01 Die-cast Optimus Prime

As the name suggests, this impressive incarnation of Optimus Prime was produced in celebration of the 20th anniversary of the Transformers brand. So successful was the figure that ToyFare magazine ultimately ranked it #1 in their quest for "Best Toy Ever".[4]
Created with the specific purpose of producing an Optimus Prime as accurate to the original animated series as possible, the toy is exceptionally poseable, partially constructed from die-cast metal, features rubber tires and vacuum-metalized plastic and is heavily detailed, with sliding pistons in its joints and working spring-loaded suspension in vehicle mode. The figure also contains multiple non-intrusive gimmicks, such as a movingmouthplate to emulate Prime's traditional method of speech, flip-up communications panels on the forearms depicting images of Bumblebee and Starscream, and an opening, light-up Matrix chamber in the chest, which contains a removable vacuum-metalized Matrix of Leadership that can also be pulled open.
Optimus Prime comes with many accessories in addition to the aforementioned Matrix, including the character's traditional laser rifle, now termed (and henceforth known as) an ion blaster. The initial release of the figure cast the ion blaster in grey plastic, but later assortments recast it in its more familiar black coloration. Other accessories include a transparent orange energon-axe that plugs into either wrist when Prime's fist is retracted, and even a non-transforming gun mode Megatron weapon, with removable stock, silencer and scope accessories, in homage to several instances in the Generation 1 cartoon when Prime was forced to wield his enemy. Pack-in bonuses that came with the figure included an inner cardboard tray illustrated to resemble the interior of Prime's Combat Deck, and in later releases, a small poster drawn by Pat Lee.