Like the other Shadow Dragons, he is formed by the build-up of negative energy inside the Dragon Balls, released when the Z Fighters attempt to wish away the damage done to the Earth by their recent battles. Syn Shenron was born from the wish made by Mr. Popo to revive everyone on Namek that was killed at the hands of Frieza and his soldiers.[1] Even though he was not born from the first wish made in the Dragon Ball series, the most likely reason he is the most powerful of the Shadow Dragons is the sheer scale of the wish; not only intended to give those who died another chance at life, but also part of an ingenious, cunning plan by King Kai to bring Porunga back to life so he could grant one last wish to move everyone on Namek except for Frieza (and later, after King Kai reluctantly agreed, Goku) to Earth, while Frieza would be left on Namek to die when it exploded (although not everything went according to plan, it still worked out in the end). The sheer scale of this wish (in fact, it was the only one that made Shenron wonder if he had the power to grant it) produced a tremendous amount of negative energy, most likely creating the most negative energy of all wishes, accounting for Syn Shenron's overwhelming power and making him the most powerful among the other dragons. The selflessness of the wish (made to restore Namek's dragon in order to wish the population away from the dying planet) accounts for his purely evil nature. As Vegeta, Gohan, Goten and Trunks continue to distract Omega, Goku begins gathering energy from across the universe for his ultimate Spirit Bomb. Desperate to stop him, Omega repeatedly blasts Goku, but his attacks are nullified by the Spirit Bomb's sheer energy. When Goku finally has the Spirit Bomb charged up, Omega lets go of his pride and attempts to talk his way out of the situation; unfortunately for him, Goku is far too disgusted by the dragon's evil to listen. With a defiant cry, Goku unleashes the Universal Spirit Bomb; Omega is destroyed in the blast while letting out a loud scream, thus restoring the Dragon Balls and finally bringing the Shadow Dragons' evil to an end. Negative Karma Ball -- Omega Shenron's own unique ability and most powerful attack, which can destroy an entire planet easily. He pushes his chest forward, sending pure negative energy through the Dragon Balls on his chest and outward. Small red streams of energy fly out and start to form a ball of crimson energy in front of him that becomes yellow in the center. He puts so much energy into the ball that it is somewhat like Cooler's supernova attack, as it takes up the whole sky before he condenses it into a ball the width of his torso. He attempted to use this to destroy Super Saiyan 4 Gogeta, but Gogeta has shown to be mighty enough to knock it into space and cause it to release a planet-sized explosion. This attack is said to be the negative version of the Spirit Bomb.