Brave Heart

thumb|300px|right|Brave Heart/Kokoro No YukiBrave Heart is the Japanese opening theme to Metal Fight Beyblade 4D. It was attached to the second episode of the series, Legend Blader. It recieved a full makeover in Lion Going Into The Wilderness.

Version 1

 * Gingka Hagane
 * Kyoya Tategami
 * Benkei Hanawa
 * Kenta Yumiya
 * Madoka Amano
 * Blader DJ
 * Ryo Hagane
 * Hikaru Hasama
 * Yuki Mizusawa
 * Pluto
 * Masamune Kadoya
 * Toby
 * Zeo Abyss
 * Da Shan Wang
 * Chi-yun Li
 * Chao Xin
 * Mei Mei
 * Julian Konzern
 * Sophie
 * Wells
 * George
 * Tsubasa Otori
 * Yu Tendo
 * Johannes
 * Ryuga

Version 2

 * Legend Bladers
 * Gingka Hagane
 * Kyoya Tategami
 * Yuki Mizusawa
 * King
 * Ryuga
 * Chris
 * Aguma
 * Dunamis (Good and Evil Egos)
 * Titi
 * Benkei Hanawa
 * Kenta Yumiya
 * Madoka Amano
 * Team Gan Gan Galaxy
 * Masamune Kadoya
 * Yu Tendo
 * Tsubasa Otori
 * Pluto
 * Johannes
 * Hikaru Hasama
 * Nemesis (Black Sun Form and True Form)
 * Nemesis' Owner

Version 1

 * Big Bang Pegasis F:D (Gingka's)
 * Fang Leone 130W2D (Kyoya's)
 * Mercury Anubis 85XF (Yuki's)
 * Earth Eagle 145WD (Tsubasa's)
 * Flame Libra T125ES (Yu's)
 * Meteo L-Drago LW105LF (Ryuga's; Evolves)
 * L-Drago Destroy F:S (Ryuga's; Evolved)

Version 2

 * Big Bang Pegasis F:D (Gingka's)
 * Fang Leone 130W2D (Kyoya's)
 * Mercury Anubis 85XF (Yuki's)
 * Variares D:D] (King's)
 * Blitz Unicorno 100RSF (Masamune's)
 * Flame Libra T125ES (Yu's)
 * Earth Eagle 145WD (Tsuabsa's)
 * L-Drago Destroy F:S (Ryuga's)

Version 2

 * This intro is the shortest, Being just 60 seconds long.
 * Most minor characters are removed from the intro, Including Ryo Hagane, Team Wang Hu Zhong and Team Excaliber.
 * The Pegasus logo shown is not the current one.
 * This intro focuses on the Legend Bladers rather than everything else.
 * Titi is featured in the intro, despite not being officially revealed at the time of debut.