The Z Warriors discover an unopenable music box and are told to open it with the dragon balls. The contents turn out to be a warrior named Tapion who had sealed himself inside along with a monster called Hildegarn. Goku must now perfect a new technique to defeat the evil monster.
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(Source: Anime News Network)

Robert McCollum is an American voice actor who works for anime series at FUNimation Entertainment. He has provided voices for a number of English language versions of Japanese anime films. McCollum is also the host of WFAA-TV's Good Morning Texas.