Blaze
Due to heavily conflicting information, she either hails from future or another dimension. She is a princess and the defender of the Sol Emeralds, a role similar to that held by Knuckles. Blaze is sometimes referred to as a queen; She is referred to as "Queen Blaze the Cat" on the official Sega of America Sonic mini site, Sonic Central, as well as the next Sonic the Hedgehog game website. However, in Japanese, her title is »ÊÅ® k¨_jo, which translates as "imperial princess," suggesting that the references to "queen" are simply mistranslations.
She wears gloves similar to those worn by Sonic, only with fuzzy lining on the cuffs. Her shoes have the same motif as Sonic's, but they also have fuzzy lining and are high-heeled. She also wears a purple coat, lined at the neck with gold and at the bottom with red, and a pair of white tights. She has a ponytail, and a jewel-like red orb is present on her forehead.
Blaze can run moderately fast, although not as fast as Sonic. This has been proven in the multiplayer mode of Sonic Rush, in which she is considerably slower. However, she can jump much higher than Sonic. Attacking by spinning along the ground causes her to lose speed, unlike Sonic's classic spin attack. Blaze is a pyrokinetic, using her ability to manipulate fire and her claws, jumps, and kicks to fend off her enemies. She also uses her pyrokinetic abilities to propel herself in different directions and in Sonic Rush Adventure to protect herself from flames. Blaze turns into a fiery tornado when jumping, similar to Espio the Chameleon in Knuckles Chaotix, and does not keep speed or go faster. Despite the speed difference, both her blazing tornado state and the traditional "spin ball" forms of other characters function relatively the same.
By using the Sol Emeralds, Blaze is able to use Super Transformation and transform into Burning Blaze, making her the first and (currently) only female character to have a super form. Her super-form abilities differ from Sonic's in that she is able to throw fireballs similar to the Hadouken.
In Sonic Rush, Blaze is somewhat shy and withdrawn when meeting strangers, although she does not let this prevent her from fulfilling her mission. Her lifestyle is similar to that of Knuckles, and like him, she is quite timid, often finding it hard to open up and talk to people. She hates having the spotlight upon herself, preferring to take a backseat. Throughout the course of the games, she develops a more friendly and outgoing personality.
Blaze wears a cape because she was teased for her special fire abilities when she was a child. However, she will toss off the cape in a heartbeat if she needs to use her abilities.
Sonic Rush and Sonic Rush Adventure also reveal that Blaze is afraid of heights.
Eggman NEGA
Sonic Rush
Eggman Nega is one of the main villains in Sonic Rush. He is introduced as Doctor Eggman's counterpart from another dimension, and the primary nemesis of Blaze the Cat, a character from his world. He is more cruel and calculating than the Eggman from Sonic's time zone, and has sent Blaze's world into ruin, which is why she sets out for the Sol Emeralds. He is eerily polite for such a cold and calculating man. His downside, however, is that he can sometimes lose track of important details while making unnecessary speeches. His design appears reminiscent to the older Eggman from the Genesis Sonic games, albeit with the colors reversed.
Sonic Rivals
While Eggman himself is first thought to be the primary antagonist in Sonic Rivals, Eggman Nega has captured Eggman and is disguising himself as him. According to the Sonic Rivals franchise, Eggman Nega is from around 200 years from the future and that he is Eggman's descendant. Using a special camera, he turns several objects and characters into cards, with the objective of turning the world into a card that he will be able to control. During the somewhat ambiguous ending of the game, Nega is captured inside a card of his own by Silver, yet it was never revealed how he returned to the future.
Sonic Rush Adventure
Eggman Nega works alongside Dr. Eggman as his ally, as he did in the original Sonic Rush. Eggman and Eggman Nega are not seen until the end of the game, as Eggman's pirate robot Captain Whisker is the assumed villain for most of the plot. It is also revealed that Nega is even more cruel and evil than the original Eggman. When defeated by Super Sonic and Burning Blaze, he tried to take everyone down, including himself. The attack however, is thwarted by Marine the Raccoon, and both Eggmans are defeated.
Sonic Rivals 2
Once again, Eggman Nega is the main villain. He captures Chao because he wants to feed them to the Ifrit. He also has a machine known as Metal Sonic 3.0, who helps him.