"Dream Fighter" is a song recorded by the Japanese girl group Perfume for their second studio album, Triangle (2009). It was written, composed, arranged and produced by the Japanese musician and Capsule member Yasutaka Nakata. The single included the B-side track, "Negai", of which a remix version appeared on the parent album. It was premiered on November 9, 2008, as the second single from the album in Japan. It was released on June 19, 2013, in European and Oceanic regions, and on June 25 in North America. Musically, "Dream Fighter" is an electropop song, influenced by dance music.

On its release, the track received generally favourable reviews from music critics. Some highlighted the song as one of Perfume's best singles from their album and their career, and commended the production and commercial appeal. It achieved success in Japan, peaking at number two on the Oricon Singles Chart and Billboard's Japan Hot 100 chart. It was certified gold, twice, by the Recording Industry Association of Japan (RIAJ) for physical and digital shipments of 100,000 units.

An accompanying music video was shot by Kazuaki Seki; it shows the girls performing the song in a black room, with additional computer generated imagery (CGI). With additional promotion through Japanese commercials, the song has been performed on several concert tours by Perfume, including their 2008 Budoukan and their 2013 Perfume World Tour.

"Dream Fighter" was written, composed, arranged and produced by the Japanese musician and Capsule member Yasutaka Nakata. Alongside this, it was recorded, mixed and mastered by him. The song was recorded in 2008 at Contemode Studios, Shibuya, Tokyo, by Nakata. Alongside the album’s remaining material, "Dream Fighter" has partial rights by Nakata through Yahama Music Communications. The single also included the B-side track, "Negai", which a remix version appeared on the parent album. It was premiered on November 9, 2008, as the second single from the group's second studio album, Triangle (2009). The single was also released on June 19, 2013, in European and Oceanic regions, and June 25 in North America.

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