Omega Shenron

Syn Shenron is the final villain of the Dragon Ball GT anime series. He is the last of the Seven Shadow Dragons and the dragon of the one star ball. Syn Shenron later becoems Omega Shenron, after he absorbs all the other Dragon Balls and gains the powers of the other Shadow Dragons.

The greatest of the Dragons
Syn Shenron, like his fellow Shadow Dragons was born from the negative energy created within the Dragon Balls, every time a wish is made. In his case, it was the wish that brought back everyone who had been killed by Frieza and his men. Because of the size of this wish, Syn Shenron is the most powerful out of all of the Shadow Dragons. He first appeared after Eis Shenron's defeat at the hands of Super Saiyan 4 Goku and Nuova Shenron. Syn Shenron killed Nuova Shenron for his betrayal and when Goku reprimands him for killing one of his own kind, Syn Shenron tells Goku that he was the one who created the Shadow Dragons in the first place, because of his overuse of the Dragon Balls. They begin to fight, with the battle going in Syn Shenron's favor due to Goku being blinded by Eis Shenron earlier. Though Goku is able to get in a few hits and even a Kamehameha wave, this did nothing to the dragon and he left Goku hanging unconsious from Fairground tower.

Just as he was about to move in for the killing blow, Syn Shenron found himself confronted by Gohan, Goten, Uub, Pan, Trunks, Chi-Chi, Videl, and Mr. Satan. While Uub kept the dragon busy, Gohan, Goten, and Trunks gave their energy to Goku. Though Syn Shenron defeated Uub with little effort, Goku managed to recover and the second round began. However Goku was the one dominating the battle now and Syn Shneron found himself unable to match the saiyan. After the dragon attempts a trick using a clock, Goku seemingly wipes him out with a Kamehameha wave. However Syn henron wasn't beaten yet and he uses his speciall ability to swallow the other six Dragon Balls into himself, resulting in the powerful Omega Shenron.

The Ultimate Dragon
Though Goku was able to take on Syn Shenron, Omega Shenron was another story and the saiyan found himself unable to win. Though he regained his eyesight and blasted the dragon with a Kamehameha wave, followed by a Dragon Fist, Omega simply regenerated, an ability he had gained. Goky desperately perpared a self-destruction attack to kill Omega Shenron, until Vegeta arrived on the scene and, with use of a machine that generates the Blutz Waves needed for the transformation, became a Super Saiyan 4 as well. Despite this, Omega Shenron easily took on the pair, until they performed the Fusion Dance and became Gogeta, who easily managed to take on the Shadow Dragon. Gogeta then assaulted him with his Big Bang Kamehameha attack, which was so powerful, Omega Shenron spit up the Dragon Balls, reverting back to Syn Shenron. However as Gogeta was about to perform the attack again, he defused back into Goku and Vegeta.

Thinking quickly, Goku swallowed one of the Dragon Balls, preventing Syn Shenron from becoming Omega Shenron again. Syn Shenron fought both Goku and Vegeta and still managed to take them on. The two attempted to perform fusion again, but it failed and Goku reverted to his child state. The Shadow Dragon resumed his attack, only to be confronted by Nuova Shenron, who had been revived by the positive energy in Goku. Nuova Shenron attempted to use a self-destruction attack, only for Syn Shenron to survive and become Omega Shenron again. He attempted to use an attack to blow up the Earth, but Goku blocked it, apparently dying in the blast. Omega Shenron fought the rest of the Z Fighters and defeats them easily, only for Goku to appear and prepare his Universal Spirit Bomb.

The Dragon's Demise
While Goten, Gohan, and Trunks distracted Omega Shenron, Goku gathered energy from all over the universe and amassed into a powerful Spirit Bomb. The Shadow Dragon tried to blast at Goku, but it had no effect and finally the Saiyan finished gathering energy. Omega Shenron attempted to plead with Goku, but it did nothing to help him and the Shadow Dragon met his end at the hands of the Universal Spirit Bomb.