- This article is about Trunks' energy wave technique. For Android 18's energy volley, see Infinity Bullet.
Trunks uses this attack while facing against his best friend Goten in the 25th World Martial Arts Tournament, calling it "Kikouha" (Energy wave). Gohan and Krillin, who are worried of the attack causing chaos in the World Tournament arena, try to prevent Trunks from firing it. Not listening the two Z Fighters, Trunks fires the attack at Goten, who dodges the attack. In the last moment, to the relief of Gohan and Krillin, Trunks guides the attack to avoid hitting the crowd, sending it into the air.
Appearances in games
Double Buster was named in the Budokai series and Dragon Ball Heroes. It is also used in the Butōden series (called "Kikoha"), Dragon Ball Z: The Legend, the Budokai Tenkaichi series and the Raging Blast games (called "Full Power Energy Wave"), and Dragon Ball Z: Battle of Z (called "Super Energy Blast"). Gotenks can also use the technique in the Budokai Tenkaichi series and the Raging Blast games, and in the Budokai series when Trunks initiates the fusion.
"Fire a two-handed Ki Blast forward. Press the button again to chase after your opponent."
— Dragon Ball: Xenoverse in-game description
In Dragon Ball: Xenoverse, it appears as one of Kid Trunks' Super Skills. In the game, the blast will chase after the opponent if the command is imputed a second time allowing it to hit the opponent even if the initial blast is dodged. It can also be obtained by the Future Warrior as a reward in Parallel Quest 29: "2nd World Tournament Tag Team".
In Dragon Ball Xenoverse 2, it returns as one of Kid Trunks' Super Skills which can be obtained by the Future Warrior (Xenoverse 2) by purchasing it from the Skill Shop in Conton City for 35,000 Zeni after completing the Resurrection ‘F’ portion of the main story.
- Trick Buster – An energy sphere version used by Trunks as a Super Saiyan. He uses it twice while facing the evil Saiyan Broly in the movie Dragon Ball Z: Broly - Second Coming. Named in the video game Dragon Ball Z: Battle of Z.