Rumor Guide - Goku Uses Kaiō-Ken x100 in DBZ Movie 4

Kanzenshuu provides the back history, context, and facts surrounding Goku's supposed usage of Kaiō-Ken X100 in Dragon Ball Z Movie 4 against Slug

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Kaio-ken x100, Animated Character Database

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Rumor Guide - Kanzenshuu

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Kaio-ken x100, Animated Character Database

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Rumor Guide - Kanzenshuu