Super Dragon Ball Heroes - Season 3 - Eps 9: Reborn Evil - Birth of Dark King Fu!
Fu is horrified by the Universe Tree's death, until Towa and Mira arrive to help him. Towa infuses Mechikabura's energy into Fu, dramatically increasing his power and causing him to undergo a transformation into the new Demon King. However, Fu expresses no interest in this, and begins using his new powers to restore the Tree instead. Vegito tries to stop him and their fight resumes, but Towa and Mira intervene to help Fu and buy time for him by attacking Vegito. Before Fu can finish restoring the Tree, however, a portal opens and Xeno Vegito emerges, now powered up to Full-Power Super Saiyan 4 and accompanied by the Demon God Demigra. Xeno Vegito attacks Fu, and the battle resumes. Meanwhile, in an unknown location, an alternate version of Broly awakens.
About Super Dragon Ball Heroes

Title: Super Dragon Ball Heroes
First Air Date: 2018-07-01
Last Air Date: 2024-08-08
Status: Ended
Rating: 7.564/10 (from 3071 votes)
Language: JA
Seasons: 7
Total Episodes: 54
Network: Fuji TV
Genres: Animation, Action & Adventure, Sci-Fi & Fantasy
Production Companies: Toei Animation, Fuji Television Network, Bandai
Synopsis
Trunks returns from the future to train with Goku and Vegeta. However, it disappears without warning. Then the mysterious Fu bursts in, telling them that Trunks has been imprisoned in the Prison Planet, a mysterious complex in an unknown place in the universes. The group seeks the dragon balls to free Trunks, but an endless battle awaits them! Will Goku and the others rescue Trunks and escape the Prison Planet?
Cast

Masako Nozawa
Son Goku / Xeno Goku (voice)

Ryo Horikawa
Vegeta / Xeno Vegeta (voice)

Takeshi Kusao
Future Trunks / Xeno Trunks (voice)

Kappei Yamaguchi
Fu (voice)