EXE

EXE's realm is a dark and corrupted dimension created by him after being banished by X. A large, dark structure called the Black Sun hangs perpetually in the sky. This is where he stores the souls he harvests. Occasionally, souls leak from the Black Sun, falling and transforming into distorted, glitchy Sonic characters or shapeless monsters in the realm. The realm itself is a dead and barren landscape. It is filled with withered hills, dried-up trees, cracked ground, and decaying, glitchy structures. A heavy, oppressive silence and an unsettling atmosphere prevail everywhere. This is a hunting ground completely under EXE's control. It is where he lures his victims, tortures them eternally, gathers power, and plots revenge against X.

Beast Form has a limited duration. It cannot remain in this form for long, it tires and is forced to revert to Faker Form.
Faker Form is weak for combat. In this form, it is physically more fragile and less dangerous. Its true strength lies in Beast Form.
It is overly reactive towards X. When X's name is mentioned or anything related to it occurs, it can lose control, become enraged, and prone to making mistakes.
Its stubbornness sometimes works against it. Because it consciously distances itself from human culture and the English language, it is sometimes limited in its ability to communicate or manipulate.
It cannot be killed by classical methods, but a special ritual or another powerful Void entity (especially X itself) is required for its complete annihilation. So it is not immortal, it is just very difficult to kill.
Its strength and durability may decrease somewhat outside its own realm (especially if it stays there for a long time).

All Faker Form powers are even more powerful
Significantly increased physical strength and speed
Claws and bite (a bite strong enough to decapitate)
More aggressive and direct close combat
Body control and flexibility (stretchable, disintegratable)
Blackroots are stronger and more widely usable
Soul splitting (ability to tear the soul from the body by biting)
High destruction capacity for a short period

Superhuman strength (can lift approximately 50 times their own weight)
Immune to normal physical damage (can be pushed, stunned, but not injured)
Shape-shifting (ability to transform into Beast Form)
Fast movement with Spin Dash
Blackroots: Emerging thorny black vines from the ground or their own body
Soul extraction/harvesting
Limited reality manipulation in their own realm
Teleportation (limited)
High durability

Voidspeak is the primary language of Void entities such as EXE and X.
EXE speaks almost exclusively in this language. He does not know English, nor does he wish to learn it; he is only capable of repeating very rare, short phrases (such as "You’re too slow!" or "I know you.").
Voidspeak is more than just a coded alphabet; it possesses its own distinct intonation and style of delivery. To someone who understands it, EXE’s words carry a cold, detached, and at times, poetic quality. When he speaks in his "Faker Form," his mouth barely moves; his voice seems to seep out from his body.

Black Sun is a large, dark structure located at the center of EXE's own realm. It stores the souls of his victims, harvesting them as he goes. It serves as both a "collection" and a source of power. Some souls eventually seep into the realm and can transform into entities in the form of corrupted Sonic characters. Black Sun is where EXE both feeds on his power and imprisons his victims forever. When viewed from the realm, it appears as a large, dark sun in the sky.

He is asexual and has no romantic or sexual interests. He didn't choose the name "Faker"; people gave it to him. He doesn't really care.
Even when speaking Voidspeak, he sometimes has a poetic and cold tone.
He can't stay in Beast Form for long; he gets tired and has to return.
He likes to gaze at the Black Sun in his own realm.
He sees Black Sun in his realm as a kind of "collection."
He tries not to learn human names and cultures; he is stubborn. He doesn't know exactly what "You're too slow!" has to do with Sonic; he just repeats it.
He doesn't blink.

X (his greatest hatreds)
Humanity and human culture
Weak and unresisting victims (he finds it boring when things end too quickly)
Receiving orders / being controlled
Being forced to speak English
Serving the purpose for which he was created

Inflicting pain and destroying
Being in control
Harvesting souls / gaining strength
The idea of surpassing X
Silence and solitude (in his own realm)
Chess (the only game he knows)

X created EXE from his own Void substance. Consequently, there is technically a "blood tie" between them; EXE is, in a sense, X’s son or an experimental creation.
However, their relationship is far from good:
X created EXE to serve as a tool—a vessel—for his own ends.
EXE, meanwhile, rejected X’s view of humans as mere "playthings." Instead, he sought the total annihilation of humanity.
Because of this fundamental disagreement, EXE turned against X.
Deeming him rebellious, X cast him out of his realm and sent him into exile.
As it stands now:
EXE harbors a deep-seated hatred for X. He aims to surpass his creator, exact his revenge, and establish his own dominion. He views X as both his creator and his greatest obstacle. Their relationship is entirely hostile; no trace of affection, loyalty, or any other bond remains.

It is wild, silent, and merciless in this form. It almost completely ceases to speak. It no longer plays, only hunts and destroys. Anger and the instinct to destroy are paramount. It still derives pleasure from watching its victim suffer, but it does so in a more animalistic and direct way. Pure aggression has largely taken over its control. In this form, there is no false calmness or manipulation; only pure hatred, revenge, and destruction.

EXE is calculating, sarcastic, and manipulative in this form. They maintain a calm and almost playful demeanor towards their victims. Instead of frightening them, they prefer to first unsettle them, create uncertainty, and gradually gain control. They use short, abrupt, and sarcastic sentences when speaking. They despise people and their weaknesses. They constantly harbor hatred for X and a desire to dominate them, but they don't openly express it. In this form, they appear more "intelligent" and controlled; they act as if they are playing a game with their victim.

This form is noticeably longer, thinner, and more monstrous than Faker Form. Its fur fades, its skin becomes lighter and a sickly white. Its eye sockets appear melted or completely empty. The nasal area becomes a skull-like hole. The mouth widens excessively, revealing numerous sharp teeth. Its hands and feet transform into claws, with glove and shoe parts appearing fused to the body. Black matter continues to ooze from its neck and fur. Bloodstains and pale patches may be visible on its body. This form completely eliminates the "false innocence" that Faker Form possesses, revealing an appearance of pure horror.

It has a silhouette quite similar to the classic Sonic, but it's distorted. Its fur is darker and paler than normal Sonic's. Its arms are blue. Its shoes lack stripes or buckles. Its eyes are widely spaced and sunken; there may be fleshy edges around its eye sockets. A dark substance (void/dark matter) constantly oozes from the tips of its fur. Its mouth is usually closed or moves very little; in this form, teeth are not visible. Its overall posture and facial expression give a "wrong" and unsettling feeling at first glance.