Super Dragon Ball Heroes - Season 3 - Eps 4: Creeping Shadow! The Mysterious Man Dr. W!
Dr. W begins what he calls an "analysis" of Xeno Goku and Xeno Vegeta by attacking them with strange, teleporting energy blasts. They both power up to Super Saiyan 3 and engage him in combat, but he is able to hold them both off with his strange attacks and high-speed reflexes. After having difficulty overpowering him, they power up to Super Saiyan 4 and land a powerful combined blast on him; however, Dr. W deliberately takes their attacks head-on, and emerges from the smoke with a glowing golden aura identical to theirs. Having completed his analysis, he then opens a portal and escapes. Meanwhile, Fu is observing the battle between Goku, Vegeta, Turles and Bojack. He releases Doki-Doki, who generates waves of dark energy that immobilize Goku, Vegeta, Xeno Trunks and Xeno Pan. Toki-Toki tries to defuse the dark energy, but Fu traps him and throws him through a portal, before recalling Doki-Doki and escaping through one himself.
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)