Egg Wizard

The Egg Wizard is the true final boss of Sonic Rush Adventure. This boss can be fought after obtaining the 14 Emeralds; the Chaos Emeralds and Sol Emeralds, and defeating the Big Titan.

History
After regaining the Jeweled Scepter from Captain Whisker and his band of pirates, and obtaining the Chaos and Sol Emeralds, Gardon told Sonic, Tails, Blaze, and Marine that someone broke in and stole the Jeweled Sceptar. Shortly, a greater earthquake occurred and the group went outside, the Egg Wizard suddenly appeared and Dr. Eggman appeared along with Eggman Nega and told the group that they built Whikser to steal the Scepter so they could unleash the Power of the Stars. The Eggmen left to get the Power of the Stars (which was under the Southern Island) and Sonic and friends went after them in a new machine, built by Tails, called the Magma Hurricane. Once they get there, they saw they were too late as the two Eggmen got to the Power of the Stars and threatened to destroy both Sonic's world and Blaze's world and create a multidimensional Eggmanland. The immense power seperated Sonic and Blaze from Tails and Marine and Eggman and Nega also said that both Emeralds couldn't compare to their power. Nega also threatened to destroy Blaze's kingdom and taunted her ancestors, saying that it was their duty to protect the Scepter and that their help was much appreciated. This angered Blaze, but Sonic got her to calm down and they used the Emeralds to transform into Super Sonic and Burning Blaze! They then challenge the Egg Wizard for the sake of both worlds and Blaze's kingdom and people.