Here, "majin" simply refers to an alternate reading of Sega designer Masato Nishimura's own name (he voiced Sonic himself in the game). "Majin" was apparently Nishimura's childhood nickname, and as such has sneakily found its way into a few games on which Nishimura himself worked, such as Shenmue.
Majin Sonic, is a character that appears first at Sonic CD, by using a secret code to access his easter egg. In NB, he is Sonic's mind guardian.
Within the Sonic franchise's fictional universe, Shadow is an artificial, anthropomorphic black hedgehog created 50 years before titular character, Sonic the Hedgehog was born, by Professor Gerald Robotnik, the grandfather of series antagonist Doctor Eggman.
Super Sonic, also known by fans as Fleetway Super Sonic or Evil Super Sonic, is a major antagonist in Fleetway's Sonic the Comic.
Exeller is the main antagonist of Sonic.exe: The Spirits of Hell and Whisper of Soul.
Masato Nishimura (西村 真人, Nishimura Masato?), also known as Majin/Mazin (まぢん, Majin/Mazin?), is a designer at Sega.
Despite Shadow being considered neutral in terms of alignment, he is considered an anti-hero by the most part with his overall motivation, which is dedicating his life to protecting mankind. He has also been selfless and altruistic, such as nearly giving his life at the end of Sonic Adventure 2 to save Earth.
Dark Sonic is a dark super transformation achieved by Sonic the Hedgehog in the anime series Sonic X. The multitude of fake Chaos Emeralds and Sonic's intense anger allowed him to achieve this transformation.
Infinite is the central antagonist of the 2017 platform game Sonic Forces and the main antagonist of its DLC prequel, Episode Shadow. He is the Avatar's arch-nemesis and one of Sonic the Hedgehog's most dangerous enemies.
No More Innocence is a Japanese spirit that feeds on his targets childhood love for the Sonic The Hedgehog franchise, turning it into a serious addiction and necessity to keep playing with the bootleg copy that he resides in, being made by DumbieDumbie.
Despite what some modern Sonic fans might think about him, Doctor Ivo "Eggman" Robotnik will always remain one of the most iconic - and one of the most powerful - villains of Sonic the Hedgehog.
In his old appearance, Majin Sonic looks similar to Sonic's appearance in Sonic CD, but he has a purple, twisted, human-looking face, he wears a purple jacket with black cuffs and a fluffy white hood, which was made from Tails' fur, and his shoes are blue instead of red, as well as lacking the gold buckles on the sides ...
Yet Shadow is the most powerful character because of his lab origins. Gerald crafted him very carefully and made him practically immortal, so he could carry out his mission of healing without any major obstacles.
Majin Goku was created when the deceased Babidi worked his evil magic on our hero. After a prolonged mental battle, Goku succumbed to the taxing mental toll on his body- creating Majin Goku. This form is much different from any Saiyan's form.
He appears as a major antagonist in Sonic's story and the main antagonist of Knuckles' story. He is the third robotic replica of Sonic created by Dr. Eggman, after Metal Sonic and Silver Sonic.
Curse is an EXE currently being owned by Sirius". a while ago he was owned by Kenji Grimm but due some drama the character has been handed over to the two aforementioned people.
He is an alternate version of Dr. Robotnik who was driven to madness and a deep obsession to consume the flesh of Mobians.
Sonic's eternal enemy is Dr. Eggman, also known as Doctor Robotnik. Eggman is a brilliant scientist who uses his numerous machines to attempt to conquer the world, but Sonic has always intervened.
Fleetway Sonic is a main antagonist of the "Sonic the Comic" made by Sega. This version of Sonic is the pure chaos energy of Super Sonic and what would have happened if he won.
Scourge the Hedgehog, Sonic's evil twin, is on the attack!
Fire Sonic is a form introduced in Episode 8. When he used a Fire Flower, he changed from his usual blue colors to red colors, his eyes became yellow and his sneakers become white with dark yellow stripes.