Metroplex (Generations)

"Strong beyond belief, versatile, clever, brave and self-sacrificing, Metroplex is willing to give everything he has to the Autobot cause and defend it to his last astroseconds of life. Despite all this he’s wracked to the core of his being with the belief that he could and should be doing more. It’s a self-deprecating attitude that stuns many of his fellow Autobots, most of whom take immeasurable comfort in his very existence and the knowledge that regardless of what evil comes, Metroplex is out there to back them up."

Source: tfwiki.net/wiki/Metroplex_(G1).

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