As a demon of sharpness, Sark grew up in a cutthroat “kill or be killed” environment. From a young age he was beaten, humiliated but still never gave up. However, these experiences would plant insecurities in his mind. Over the years, he rose up and gained control of other sharpers, leading them in an army, becoming one of the strongest sharpers. When Exetior attempted to recruit him, Sark was skeptical. However, he appealed to the sharper’s pride and with that, Sark assisted Exetior in the war against the Highests alongside Pervision and Negagen. After they lost, Exetior and Negagen were given restrictions to a few selected planets and stripped of their titles . Sark was captured by one of the Highests, "Stitch-Lite", and was subjected to various forms of torture from her thus leading to his insanity and decreasing mental stability. He thinks he's better than all the demons, especially Exetiorand want to be the top of everyone.

Amy Rose is a victim from Sark’s dimension. When she was alive, she was in love with Sonic and was often seen as a love rival to Sally. It was unknown if this Sonic, before Sark, ever loved her back or not. But as a demonized, she was unfortunately abused and neglected by Sark who took over Sonic’s body. Her life was a living hell but all of it has changed when Exetior took her in during the DSF ending. Although this ending is non-canon, due to looking into the future of the DSF ending with a Time Stone, Sark learned of Exetior planning to “betray” him and decided to turn on him first. As such, Amy is still, unfortunately, kept as Sark’s prisoner canonically. She was formerly voiced by YuriHaru, as of now, she is currently voiced by TheAwkwardGirl. Before Sark Demonized her, this Amy Rose has the same dress, band and boots like her game canon counterpart. Her fur was bright pink and her eyes were green like emeralds. After Sark Demonized her, Amy’s fur had lost its brightness and her face and body was stitched all over. Her clothes and boots are darker red and she has one eye opened with the other is stitched but she can talk with her mouth unlike the original Sonic.exe game. She Is 7'9 She Is 19 Years Old. Have Fun ^^

Exeller can create clones that reveal the location of survivors within their field of view, up to two and teleport to each one, replacing them. This ability provides Exeller great strategic potential in all environments. He can also cancel his spin, this will allow him to avoid bouncing off of survivors. All killers can do that. Exeller is an antagonist of Sonic.exe: The Spirits of Hell and later, its sequel, Sally.exe: The Whisper of Soul, games were released by Dan the Patient Bear in 2018 and 2021 respectively.