Sonic.exe

Sonic.EXE, is the central antagonist of Story Mode. He is a sadistic demon that resides in a haunted Sonic the Hedgehog cartridge. He is the main opponent of Too Slow, You Can't Run, and Triple Trouble. He's also was an upcoming opponent of Final Escape and was planned to be a playable character in Slaybells and Too Slow (Encore) before being replaced by Grimbo.

Appearance Sonic.EXE is extremely similar to Classic Sonic, but with notable differences. His fur is darker, and his arms seem to be "softer", and he smiles abnormally with his mouth being totally dark. The main characteristic of Xeno is his black eyes with small reddish glowing pupils, and his eye sockets secrete slightly pink blood from his lower eyelids, resulting in a permanent mark on his face. Occasionally, Sonic.EXE is depicted being slimmer or flatter to differentiate it from regular Sonic.

In You Can't Run, X is taller, has a more serious look, his pupils are absent, and his fur is messier, with his eyes wide open and revealing a bit of his skull on top. In addition, his fur is more purple, and the part of his fur turns into light purple crystals, along with a small X-shaped scar on his chest. His lips stick together like a goo, and the fingertips of his gloves are bloodied. By getting annoyed, Sonic.exe changes reality to a more classic design. In this form, his eyes are more similar to normal Sonic, and the blood from his gloves is gone, however he still has taut lips and blackened fur, along with the flesh of his eye sockets and his mouth being visible in both his poses and idle. Ever since he becomes taller, he take the apperance of Modern Sonic. In the Encore version, the pixel section renders his appearance to be more accurate to Sonic as seen in Sonic 1, with some poses exposing either his blood or his real eyes and now-yellow teeth.

In Triple Trouble and Final Escape, Xenophanes takes on a more beastly form similar to the original portrayal of the character, created by ASTRAMONICONX. In this form, his height increases again, now dwarfing Lord X even uncrouched. His spines are bigger but even messier and more crystallized, and this also reaches the eyebrows and tips of the ears. His former blue fur turns to indigo purple as the blood on his gloves covers half of his fingers. His eyes are larger, exposing more of his cracked skull, and his pupils appear smaller, with red and white irises and black pupils. The X-shaped slash on his chest is now larger, similar to Lord X's. The blood in his body present in his eyes and in his cut are more purple, while his smile opens up revealing his purple-toned gums, tongue and teeth, and crystallized on the sides. The aforementioned X slash now resembles a bleeding wound compared to the original Xenophanes' own slash resembling red scars.

In his planned design to be used in Slaybells, originally planned for the 2.0 update, he appears to be the same as his conventional appearance, except that two strands of fur on his head are messed up. His shoes are replaced with identical boots, but with pointed sides and no cuffs. He uses the two, for some reason untouched, tails of Soul Tails as a scarf. In his poses, he releases his quills' crystals.

One of the traits of Sonic.EXE that deserves a section of its own is his powers, as he uses them constantly in his songs. Among them is the ability to mess up his own fur, sprout arms or tendrils (perhaps in reference to the tentacle described in Sally.EXE) of his mouth, alter reality, stick on the tips of his lips together, switch the colors of various parts, or make his pupils, blood or teeth disappear, or otherwise change them to something more macabre (pointy, rotten teeth, or glowing pupils). He also can switch an object's trait such as a microphone gray color to red. Despite .EXE's flesh being supposedly a jumbled mess, he can also summon a normal gum and tongue.

Despite popular belief, this version of Sonic.exe is NOT the original. He is instead a reinterpretation of both Shei's Xenophanes, who is also the new official version of Sonic.exe; and MY5TCrimson's Sonic.exe. The main difference is that this version is a demon, while the official one is an alien and the original is a void entity. This version also lacks the crystals on the knees that the canon one has. The official version was created after Sonic.exe was taken away from JC and given to Shei and JoeDoughBoi, who then created Xenophanes and Lord X. In hindsight, this Xenophanes was shown way before the official version was revealed, so this may add to the belief.

The original version of Sonic.exe was actually a dark matter creature who was born in a void between dimensions. He originally had red shoes like most versions, but was changed to grey in 2013. In the same year, a user named MY5TCrimson created a fangame based on the creepypasta, which contained their own take on the character. The creator of Sonic.exe, JC, did not like the changes Crimson did to the story.