Gizoids

Gizoids

Gizoids are robotic weapons revealed to be originally created in ancient times by the Nocturnus Clan of Echidnas in Sonic Chronicles: The Dark Brotherhood.Their most distinguishing trait is the ability to "Skill Copy," in which they can copy personality traits, knowledge, and fighting techniques.They form a obedience "Link" with those who have great power.Sonic Battle introduced the first Gizoid to be featured in a game, Emerl. This Gizoid was discovered by Professor Gerald Robotnik, who attempted and failed to nullify its destructive programming.So to suppress it, he created for it a "soul" similar to Shadow the Hedgehog, based on his granddaughter, Maria Robotnik.In the course of the game, Doctor Eggman takes Emerl in the hopes of using it to rule the world, but tosses it aside when he finds no use for it. Sonic the Hedgehog finds it on a beach, names it Emerl, and he and his friends teach it how to fight. However, a glitch allowed for Gerald's programming to be overwritten and the out of control Emerl was destroyed.

EggRobo

EggRobo is an egg-shaped humanoid robot which resembles Doctor Eggman. They first appeared as enemies in the game Sonic & Knuckles. In Sonic's storyline in that game, they only appeared as standard badnik enemies in the Sky Sanctuary Zone, after being seen launched from the Death Egg.
They are rather more prominent in Knuckles' story, however, as one EggRobo in particular replaces Eggman as the end-of-zone boss in every level up until the Hidden Palace Zone, although a glitch in the game sometimes results in the player fighting Robotnik instead of EggRobo in Flying Battery Zone. This EggRobo also appears in cut scenes in the game. At the beginning of the game, while Knuckles is relaxing along with some of his animal friends, the EggRobo drops a bomb in their midst that scares his friends away. This EggRobo is destroyed by Mecha Sonic in the Sky Sanctuary Zone (the final level in Knuckles' storyline). The EggRobo restrains Knuckles, allowing Mecha Sonic to charge at him, but Knuckles breaks free and Mecha Sonic destroys the EggRobo instead.
An EggRobo later appears in Sonic R as an unlockable character, with abilities similar to Eggman. An EggRobo appears in Sonic Adventure 2 as a kart racing VMU Download with his own stage, and again in the Nintendo GameCube port Sonic Adventure 2: Battle as Rouge the Bat's unlockable sub kart, obtained by getting all the emblems of Rouge's missions. EggRobo also appears in Sonic Chronicles: The Dark Brotherhood on the Metropolis map, along with a Sega Genesis.

E-123 Omega

E-123 Omega or technically E-123 Ω, is the 24th and last of Doctor Eggman's E-100 series robots, specifically designed to contain and control Shadow the Hedgehog. In his first appearance in Sonic Heroes, Eggman seals Omega within an abandoned base, along with Shadow, until Rouge the Bat accidentally releases Shadow from his stasis pod.Infuriated at being sealed, Omega decides to team up with the other two in order to obtain revenge on Eggman and prove that he is the most powerful robot of all,dismissing the others as "worthless consumer models".
He returns with the same goal in Shadow the Hedgehog, and teams up with Shadow in certain levels to destroy Eggman's robots. During Sonic the Hedgehog, he is playable after Rouge orders him to support Shadow many years in the future.He is also one of the secret unlockable characters in Sonic Chronicles: The Dark Brotherhood found in Metropolis.Omega will appear in the upcoming Mario and Sonic at the Olympic Winter Games as a boss in speed skating.
Omega has an array of extremely destructive weapons concealed in his arms, including machine guns, flamethrowers, missile launchers, and energy cannons. He can also retract his hands in order to attach a spinning Shadow and Rouge in their place, either using the two as melee weapons or firing them.Omega can use jet boosters built into his back to help accelerate and hover. He also has a range of sensors in order to detect and locate enemies. Omega is voiced by Taiten Kusunoki in all Japanese games, and was voiced by Jon St. John (Sonic Heroes), Andrew Rannells (Shadow the Hedgehog) and the late Maddie Blaustein (Sonic the Hedgehog (2006)) in English games.

Vector the Crocodile

Vector the Crocodile is a large, strong crocodile. He is the "head honcho", and the brains, of the Chaotix Detective Agency.Divided between being "bossy" and "easy-going," his rough speech and outward appearance mask his clear reasoning and ability to resolve cases.For the right price he'll take on most jobs, unless they involve doing something immoral.Vector has a strong sense of justice and kindness, despite his argumentativeness.He often does unpaid work due to his charitable nature,leaving the agency constantly short on money.Vector hates having to work for the landlord, but he enjoys singing, and his trademark is a set of headphones.He is physically very strong and his powerful jaws are a formidable weapon.

Eggman Nega

Eggman Nega

was introduced in Sonic Rush as the arch-enemy of Blaze the Cat. Although his outward appearance resembles that of Doctor Eggman, his personality is different. He is also the main villan in the Sonic Rivals series. He will be appearing in Mario and Sonic at the Olympic Winter Games as a boss.He is heartless and calculating, in eerie contrast to his polite speech and manners.His name is a play on the word "negative".

Maria Robotnik

Maria Robotnik

is a character that appears in flashbacks for Shadow the Hedgehog and the video games Sonic Adventure 2, Shadow the Hedgehog and the anime Sonic X. She is the granddaughter of Professor Gerald Robotnik, and is the cousin of Doctor Eggman. Maria suffers from the illness known as "NIDS" (Neuro-Immuno Deficiency Syndrome), which was incurable at the time. Gerald takes on Project Shadow in order to save her. Soon after Shadow is created, the two bond deeply, though it is short-lived as G.U.N. soon raids the ARK, fatally shooting Maria. Before she dies, she encases Shadow in an escape pod and asks him to bring hope to humanity and give humans a chance to be happy. This experience scars Shadow for life, but ultimately his determination to keep his promise to Maria leads him to become friends with Sonic and save the Earth multiple times.

Blaze the Cat

Blaze the Cat

comes from royalty as a princess from an alternate dimension. She's 14 years old and appointed as defender of the Sol Emeralds, her role is similar to Sonic the Hedgehog and Knuckles the Echidna combined. She is portrayed as calm and levelheaded, hiding her true feelings. She is sometimes "bogged down" by her own strict discipline and devotion to her position, making her appear withdrawn. Blaze can control fire, but wears a cape to conceal it as she was teased about her pyrokinetic abilities when she was young. Using the Sol Emeralds, she can transform into Burning Blaze. She is voiced by Nao Takamori in Japanese media and Bella Hudson in English-language media.
Blaze debuts in Sonic Rush as a playable character along with Sonic. She arrives in Sonic's dimension from another dimension along with the Sol Emeralds. While searching for the Emeralds, she befriends Sonic, Tails, and Cream the Rabbit, and helps them stop Dr. Eggman and Eggman Nega before returning to her dimension.
She returns in Sonic the Hedgehog as Silver the Hedgehog's friend during the future of Sonic's dimension. The two fight against Iblis and attempt to fix their ruined world by traveling back in time. Blaze eventually seals Iblis within her body and disappears into another dimension; however, this event is reverted in the end, as are all other events in the game. She acts as a main character in Sonic Rush Adventure, where Sonic and Tails are transported to her dimension and help her retrieve the "Jeweled Scepter". She is an unlockable character in the Sonic and the Secret Rings party mode and Sonic Riders: Zero Gravity, and a playable character in Mario & Sonic at the Olympic Games and its sequel Mario & Sonic at the Olympic Winter Games.
Blaze is playable in Sonic and the Black Knight, taking on the persona of Sir Percival of the Knights of the Round Table, and is equipped with a Rapier sword.