Looking back, there seems to be a fascination with alternation when it comes to Optimus Prime exclusives and related characters in the Prime Collectors Universe. The 2008 Transformers Universe Nemesis Prime (right) covers all the bases with a Multiverse Prime character offered as an SDCC exclusive. The character bio reads as follows:
Broken by a nightmare eternity of torture at the hands of Straxus, Nemesis Prime does not remember what he was before he was this. He is the culmination of a grand plan never realized by Straxus before his destruction; a lowly warrior reconstructed to be the very image of Optimus Prime. Imprinted with memory engrams and combat algorithms recovered from hundreds of sources, he possesses much of the knowledge of the Autobot leader, but without any framework by which to organize it. Despite his incredible power, he is deeply unstable, a threat to Decepticon and Autobot alike. He cowers in the shadows of Cybertron, living only to stalk and destroy his fellow Transformers.
The doppelganger Classics Optimus Prime mold was also offered as a convention exclusive with Takara's Transformers United Black Optimus Prime (left) for the 2012 Tokyo Toy Show. This was before Hasbro and Takara unified their designs, giving us different figures that are both interesting in their own way.
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