Henry Dow (center) helps make sure Optimus Prime (a Transformer character played by Ray Maddocks  of Morrill) looks his best at the BangPop Comic Book and Pop Culture Convention on Saturday at the Bangor Civic Center. Behind them are Rich Nielsen of Searsport and Elmer Nickerson (far right) of Searsport, who is costumed as Megatron, another Transformer character, replete with a fusion cannon. Buy Photo
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