Omega Shenron gains the abilities of all the other Shadow Dragons, as well as a massive general power increase. Omega Shenron can also take this form with less than seven Dragon Balls-such as when Goku eats the Four-Star Dragon Ball, but he is somewhat weaker and only possesses the powers of the Shadow Dragons whose Dragon Balls he did manage to absorb.
As Omega Shenron, his brutal personality becomes more pronounced, and he is intent on destroying everything and everybody that stands in his way, being the dragon of absolute destruction. He is nearly invincible in this form and is only outclassed by the fusion of Super Saiyan 4 Goku and Super Saiyan 4 Vegeta, Super Saiyan 4 Gogeta. He easily beats up Goku, Vegeta, Majuub, Gohan, Trunks, and Goten, and nearly managed to destroy the Earth through the mere release of his negative energies. In the end, it took a Spirit Bomb from the whole universe to defeat him.