Big Tree Cannon
From Dragon Ball Encyclopedia, the ''Dragon Ball'' wiki
Directory: Techniques → Offensive techniques → Ki → Energy waves
The Big Tree Cannon (ビッグ 木砲, Biggu Kihō) is an energy wave attack used by Trunks Brief.
Usage
Trunks extends his arms to his sides and forms two golden energy spheres. He then brings his arms to his front and fires a large golden energy wave at his opponent, inflicting a high amount of damage.
It is likely that it was either taught to Trunks by Vegeta or that Trunks developed it after watching his father perform the Final Flash.
History
Dragon Ball Z
Trunks used this attack in his match against Son Goten at the 25th Tenkaichi Tournament. Later, Trunks (who was with Goten in a Mighty Mask disguise) used this attack again in an attempt to blast Artificial Human No. 18 out of the sky.
Films
Trunks used this attack with Goten's Kamehameha to destroy the solidified Bio Broly in Dragon Ball Z: Bio-Broly, but the color was changed to blue.
Video games
Big Tree Cannon is named in the Budokai Tenkaichi video game series and is Trunks' Ultimate Blast in his Super Saiyan form. It is also Gotenks' Ultimate Blast in his base form and one of his Blast 2 attacks in his Super Saiyan and Super Saiyan 3 forms.
It later appeared in Dragon Ball: Raging Blast and used by Gotenks uses in his base form. It is blue.
It is named Kiaihō (気合い砲, Kiaihō) in the Butōden video game series, Double Buster (ダブル バスター, Daburu Basutā) in the Budokai video game series, and Daburu Basutā (ダブル バスター, Daburu Basutā) in Dragon Ball Heroes.
