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http://en.wikipedia.org/wiki/Soundwave_(Transformers)
Transformers: The Headmasters
Although Soundwave did not appear in the American cartoon series finale, the three-part The Rebirth, he returned to the forefront in the new Japanese-exclusive series, Transformers: The Headmasters, which was created to replace The Rebirth . Reborn as Soundblaster (New Soundwave in the English version and Vizar in Italy) Soundwave's new toy incarnation was, like the series, available only in Japan.
In the opening cut and thrust of Headmasters, Soundwave and Blaster engaged in their final clash in the Arctic Circle as the Autobots and Decepticons were in the process of searching for the missing Autobot Matrix of Leadership. The two opponents inflicted fatal damage to each other, and Soundwave's body exploded even as Blaster collapsed, albeit his fragments were recovered by his cassettes. Using reconstructive technology from the planet Master, the leader of the Decepticon Headmasters, Zarak successfully rebuilt and resurrected Soundwave as Soundblaster — essentially identical to his former self, except for his predominantly black color scheme. As Soundblaster, he served the same role as he had as Soundwave under the leadership of Galvatron and later Scorponok, frequently embarking on spying missions with Ratbat.