Negative Karma Ball, also known as Minus Energy Power Ball (マイナスエネルギーパワーボール Mainasu Enerugi Pawā Bōru) is an energy sphere technique that is the ultimate attack of Omega Shenron and one of Mira's attacks.
Omega Shenron pushes his chest forward, channeling pure negative energy through the cracked dark-blue Dragon Balls on his chest. Small red streams of energy fly out and start to form a crimson energy sphere as it expands many times its original size. Omega Shenron condenses the sphere to about the size of his body and launches it at the opponent, inflicting a huge amount of damage.
Omega Shenron first uses this attack in an attempt to destroy Super Saiyan 4 Gogeta and the Earth. However, Gogeta teleports in front of the Negative Karma Ball and channels some of his positive energy into it by his knee before he kicks it up into space. This changes the Negative Karma Ball into a positive energy sphere (with a whitish blue color) that soon creates a nuke-like explosion upon leaving the Earth's atmosphere, which removes all traces of the dark clouds covering the Earth along with the negative energy in the air.
Omega Shenron later uses it against the weary Goku and Vegeta, which nearly kills the former. Omega Shenron uses the Negative Karma Ball on Goku again while he is holding the Universal Spirit Bomb, but to no avail until Goku kills Omega Shenron.
- Ultimate Minus Energy Power Ball - A more powerful variation of the technique mentioned by Omega Shenron in the Adventure Mode of Dragon Ball Z: Extreme Butōden. It is revealed near the end of Adventure Mode that Omega Shenron used his negative energy to warp time and space in order to generate enough negative energy produced by the Z Fighters battling various villains to create the Ultimate Minus Energy Power Ball which is said to be capable of destroying the Universe. However with Beerus' assistance (by fighting with Goku) Super Saiyan God Goku manages to seal the minus energy of the Ultimate Minus Energy Power Ball and Omega Shenron in the Ultimate Dragon Balls. The attack itself is only mentioned as part of the plot and is never actually shown in-game.
Appearances in games
This technique is called Minus Energy Power Ball in Dragon Ball Z: Budokai 3, Dragon Ball Z: Infinite World, Budokai Tenkaichi series, and Dragon Ball Heroes where it appears as Omega Shenron's Ultimate Blast. During the attack, he usually announces "This whole planet... WILL BE DESTROYED!" and causes collateral damage.
In Dragon Ball Xenoverse, Minus Energy Power Ball is an ultimate skill used by Omega Shenron. It is also used by Mira when he is fought in the main story and appears his 3rd skillset as part of GT 2 Pack DLC. It can also be obtained by the Future Warrior via a wish from Shenron.
In Dragon Ball Xenoverse 2, Minus Energy Power Ball returns as an Ultimate Skill used by Omega Shenron and Mira. It can also be obtained by the Future Warrior (Xenoverse 2) after unlocking the additional wish options through Guru and then wishing for more Ultimate Attacks.
"The Ultimate Minus Energy Power Ball is finally, finally finished! Ha ha! The entire universe is in my hands!"
— Omega Shenron in Extreme Butōden
In Dragon Ball Z: Extreme Butōden, Omega Shenron uses the Minus Energy Power Ball as his Z-Assist when he is summoned as a support character. When summoned he will appear and fire the Minus Energy Power Ball diagonally down from the air. A more powerful variation of the technique called Ultimate Minus Energy Power Ball is mentioned in Adventure Mode and it is revealed that Omega Shenron's ultimate plan was to generate enough minus energy to create one and finally manages to complete it using the minus energy generated by Goku's fight with Broly and Hirudegarn. It is implied in conversation between Beerus and Whis that the Ultimate version of this technique could potentially destroy the entire Universe. As a result, Beerus decides to use Omega Shenron and his new technique to gauge the power of the Super Saiyan God form. Beerus aids Goku by having Whis unlock the power hidden in Goku and Vegeta's consciousness that cannot be accessed through training and then fights them alongside Omega Shenron and Whis, to bring out Super Saiyan God's ki which manages to seal Ultimate Minus Energy Power Ball and Omega Shenron in the Ultimate Dragon Balls, restoring Universe 7 to normal.