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Directory: TechniquesOffensive TechniquesMouth Energy Wave

Ill Flash (イルフラッシュ Iru Furasshu)[12][13][10][11], also called Gack!/Gah!/Guoah! (ギャー! Gyā!), is a Mouth Energy Wave notably used by Super Buu.


First, Buu opens his mouth and charges a pink energy sphere with additional streaks of black and pink electricity. Then, he fires the energy sphere from his mouth in the form of a narrow, pink energy wave at the opponent, inflicting a high amount of damage.



Huge Buu's Gack!

This attack is first used by Huge Buu against Shin, but it is countered by Grand Supreme Kai.[14]

Super Buu uses Ill Flash during his battle against Super Saiyan 3 Gotenks. After Super Buu knocks Gotenks into a building in a city, Gotenks attempts to attack Super Buu. However, Super Buu counterattacks with Ill Flash, injuring Gotenks and laughing at the result. Humiliated, Gotenks blasts Super Buu with his Revenge Cannon, injuring the Majin and making him fall to the ground.[15]


Super Buu charges the technique in front of Gohan

Super Buu also uses this attack twice during his battle against Ultimate Gohan. The first time is when Gohan easily dominates Super Buu and throws him into a mountain. Gohan charges after Super Buu, but the Majin emerges from the rubble and counters with Ill Flash, which Gohan deflects it before it was released.[16] The second time is when Gohan elbows Super Buu in the face and kicks him into a mountain. Enraged, Super Buu powers up, causing the rubble around him to explode into many rocks fired at Gohan, who manages to destroy every rock near him. Super Buu rides on one rock and attempts to fire Ill Flash again at point blank range. However, Gohan pushes the blast back inside Super Buu's mouth, injuring the Majin.[17]

Kid Buu uses it against Goku and Vegeta on the Sacred World of the Kai.

Video Game Appearances[]

In Final Bout, it is named Vice Shout and is Kid Buu's ultimate blast.

In Budokai 2 and Budokai 3, it is named Ill Flash.

In Supersonic Warriors, it is named Dimensional Portal Cannon.

In Budokai Tenkaichi, it is named Super Mouth Blast and is one of Super Buu's Blast 2.

In the Raging Blast series, Ultimate Tenkaichi, and Dragon Ball Z For Kinect, it is named Gack! where it is one of Super Buu's Super Attacks.


Super Buu's Guoah! in Battle of Z

In Battle of Z, it is named Guoah!

In Xenoverse, it is named Ill Flash and is a sweeping Mouth Energy Wave Super Skill used by Super Buu. It can be obtained by the Future Warrior as a reward in Parallel Quest 36: "Majin Banquet".

In Xenoverse 2, Ill Flash returns as one of Super Buu's Super Skills which the Future Warrior can obtain by purchasing it from the Skill Shop. After the 1.15.00 Update, it can be added to Janemba's custom skillset after purchasing it in his Partner Customization.

In Kakarot, it is named Evil Buster (イビルバスター) and is one of Super Buu's attacks.