A long-forgotten artifact in the Sgt. Frog community, this is back when ADV was going to dub the series, rather than FUNimation, with Keroro voiced by Vic Mignognia of Full Metal Alchemist and Dragon Ball Z fame.
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In 2006, before FUNimation got their license to Sgt. Frog, ADV was supposed to do it but they...