Exe's temper is also his Judas. While Exe does enjoy a good fair game and does except losing once in a while, sometimes outright losing or not getting his way all the time is what really sets him off. Get Exe angry enough times, he'll rage-quit and leave you alone....for now. Exe is also known to be extensively manipulative and clever, as he influenced a master programmer to create the game disk, led a cult to believe that he's really a good guy, and has warped the minds of several of his slaves, most notably Tom. After creating the basis for his world, Exe grew more egomaniacal about his powers, viewing his creativity as superior beyond all else. He was really eager to have humanity under his command, hoping to show them all how "wonderful" his newly-built home looked. Unfortunately Exe learned that he did not truly exist in the other universe and thus was not able to access into the human world very easily. He was, however, able to channel some of his powers into it to find ultimate access into it. Despite being evil, there is a few shreds of decency in Exe's character. Even though Exe loves tormenting humans in the worst way imaginable, he never considered killing one. Exe abhores death in several ways, believing that a dead human is a waste of a good toy, which is why he steals the souls instead, because the soul is eternal even in death, and Exe believes if he steals the soul and shapes it into a slave, it will live forever with him. Exe is also a very good sport most of the time and can be easy to impress, despite being painfully arrogant, as he's shown his admiration to Derek's persistence in stopping him before deciding to steal his soul. Exe is aware that he's evil, and even admits that he has a very monstrous personality. Kyle warned Tom in note to not play the game, but Tom dismissed Kyle's warning and played the game anyway, falling right into Exe's trap. Exe did his usual spin on Tom, but the monster found particular interest in Tom as well. Tom had a persistent curiousity and an obsessed desire to help others, and Exe found these traits of Tom's to be astoundingly entertaining. Exe tormented Tom by using the two traits against the boy, up until Tom was driven to suicide in attempt to escape Exe, however Exe still obtained Tom's soul and made him another slave.

In addition to Exe's arrogance, Exe greatly dislikes God and the Devil, believing that they both are unfit to rule over Humanity (In fact JC stated that the "SEGA 666" on the first Sonic.exe story was Exe's way of making fun of both God and the Devil). To this day, the cult of X has been passing down the game disk person to person continuously and Exe has been collecting more and more slaves. Aside from his insatiable love for humans and his sadistic and creative need to play with them, Exe also idolizes Sonic the Hedgehog, which inspired Exe to create a body for himself similar to his idol's and also create a world that has many aspects from Sonic's world, and hopes to one day have Sonic all to himself as he rules over humanity. While Exe does truly admire Sonic to the point of possible homosexuality and fanaticism, he also shows great disappointment whenever Sonic doesn't act like the Sonic he idolizes. Exe has something of a small symbiotic relationship with his seven guardians and his game disk, this is most likely due to Exe using his dark matter to create them.

There is a way to release ourselves. A spell to obtain our souls once more, but when we speak it, no sound; We are all deaf. So failure is inevitable, and I regret ever entering my internal bet with the devil inside of me. Immortality vs. Soul Snatching. Gary Crook vs. Jake Shanley. Ambition is overrated..."

After 29 captures, Exe's disk then fell into the hands of a boy named Kyle in 2012. Exe managed to snag Kyle's soul very easily despite Kyle's efforts to stop him. In a last ditch effort to put an end to Exe's game, Kyle sent the disk to his friend Tom, believing the destruction of the disk would mean the destruction of Exe himself (this proved to be false in the sequel).

While Sonic.exe is powerful and evil and beyond terrifying, there are some very comical and odd features about him, and Sir JC has confirmed several of the quirks to Exe's character.