Transformers Armada, known as "Micron Densetsu" in Japan, was the first chapter of a whole new wave of stories collectively called the "Unicron Trilogy". Followed by Energon and Cybertron. It began the journey into a very different style of Transformers that were activated by Mini-cons and later Powerlinx technology. These were big figures with the Optimus Prime Super Mode figure serving as the biggest and most elaborate of them all in the series with three different elements being the Cab robot, Super Mode robot, and the Super Base that served as the base for the Cab and could be adorned with Mini-cons.
Later in the Armada series, many of the figures were repainted for the Powerlinx phase of the show. Hasbro actually produced a different version of the Powerlinx Optimus Prime that never made it to market. The figure had some different colors, more details, and extra paint apps. Today's Prime shot takes a look at the original Test Shot version that was never released. He is shown here with the Takara Magnus Convoy DX edition of Overload as "Magnus", and the blue recolor of Sparkplug as "Atlas" that was released the Micron Densetsu series since we never formally got this set in America.