Sage was created by Dr. Eggman to infiltrate the Cyberspace network of the civilization of Ancients, and only the evil doctor himself knows why, but he endowed Sage with human emotions. Sage’s main task is to protect Dr. Robotnik, a task she is willing to do anything to accomplish.

Dodon Pa

Dodon Pa does not possess a strong moral compass and is in no hurry to make friends. He is a person fully immersed in his work and does not pay attention to unnecessary details. He doesn’t care who to team up with or what to do to achieve his goal, but he doesn’t go for outright villainy, being more of a neutral character. At the same time, his directness is a source of problems, as he can often overlook the problems in the outright evil intentions of others.

Infinite

As an ultimate mercenary, while still working in his profession, the leader of the Jackal Squad was rational, fierce, brutal and ambitious, driven only by his earnings and not caring about anything but his own well-being. During the attack on Eggman’s base, the Jackal Squad leader was struck by the Phantom Ruby and saw in it his deepest desire for chaos and anarchy in the world. The mercenary hated peace and stagnation and wished to give the world movement through struggle. Eggman liked the mercenary’s ideas and hired the Jackal Squad to defend his own base.
Infinite has no pity, is utterly uncompromising and desires only chaos. He is incredibly strong and unforgiving of mistakes and it is thanks to his power that Eggman Empire takes over 99% of the world. However, the combined forces of Resistance, particularly Sonic the Hedgehog, Classic Sonic and Avatar defeat Infinite and Eggman, restoring peace and order.

Avatar

Avatar is insecure and even somewhat cowardly, but clearly actively struggles with this trait in himself. Inspired by the example of heroes such as Sonic, he always strives for rightness and never gives up in an attempt to protect his own world from destruction. He is willing to do anything to protect the world and his loved ones, and wants to prove to everyone that he is not just the wimp that Infinite thought he was.
Even after this defeat from Infinite, Avatar became one of the few who had the courage to join the Resistance and oppose Eggman Empire. Together with the Resistance, the unnamed hero, whose appearance, weapons and style are chosen by the player, frees Sonic from his half-year captivity and, together with the legendary hero, defeats both Infinite and Eggman.

Zor

A member of the evil Zeti race, Zor is depressed, unmotivated, lazy and whiny. Like all Zetis, Zor, as conceived by the developers, is supposed to demonstrate a certain vice of modern society, which, apparently, is the stereotypical idea of emo subculture. Zor is always whining, looking at everything from the negative side, as if he enjoys sadness, pain and suffering, both others’ and his own. Zor is completely unwilling to do anything, and even during combat he prefers not to take any active action. As the laziest and most unmotivated of the Zeti, he is nonetheless somewhat of a threat and should not be underestimated.

Zeena

A member of the evil Zeti race, Zeena is self-confident, gullible, narcissistic, and irascible. Like all Zetis, Zeena, as conceived by the developers, is supposed to demonstrate a certain vice of modern society, which, apparently, is the stereotypical idea of woman of the consumer age. Zeena doesn’t care about anything but her appearance and is willing to kill for ruined nail art. She is easily manipulated by pressure on her ego, which both her relatives and her enemies take advantage of. She is so self-confident that she thinks she is the only one who can defeat Sonic, which proves to be untrue in the end.

Master Zik

A member of the evil Zeti race, Master Zik is the oldest, smartest, and probably one of the most dangerous of his race. Unlike the other Zetis, who represented a certain vice of society, Master Zik does not represent any social stereotypes, but is clearly inspired by the image of an Oriental sensei, borrowing their appearance design, the behavior, fighting style, as well as the training ways of his students – cruel but effective. However, unlike the stereotypical Oriental sensei, Master Zik is evil, conniving, self-serving, and will do anything to win. He is not bothered by anyone or anything but power, and he teaches the same life style to his students.

Zomom

A member of the evil Zeti race, Zomom is incredibly gluttonous and stupid, while being as vicious and aggressive as his relatives. Like all Zetis, Zomom, as conceived by the developers, is supposed to demonstrate a certain vice of modern society, which, apparently, is the stereotypical idea of gluttonous people. Zomom does not care about anything but filling his own stomach, At the same time, Zomom is stupid enough not to understand the simplest instructions. Among all the Zeti, Zomom is one of the most non-threatening, giving Sonic not much trouble.

Zazz

A member of the evil Zeti race, Zazz is impulsive, aggressive, and frankly, insane. Like all Zetis, Zazz, as conceived by the developers, is supposed to demonstrate a certain vice of modern society, which, apparently, is the stereotypical idea of punk culture. Zazz is disorderly and unpredictable, he is not guided by clear motives, but he makes up for it with his unimaginable aggression. At the same time, Zazz is a frankly weak opponent, causing Sonic the fewest problems among all Zetis.

Zavok

An evil and cunning villain, Zawok is interested in nothing but power and domination over the world. As a member of the Zeti race, like his kin, Zavok possesses the unique ability to subdue robots, but he also has many other abilities that make him a worthy opponent.
He achieves his goals at any cost – whether through deception, trickery, or brute force, he does not forgive defeat. By and large, he dislikes even his relatives, bullying and manipulating them for his own ends. The only being Zavok respects is his teacher, Master Zik.