RAGE Executor

Scarlet/Semi-True Form: When Exetior uses too much power, Sonic's body begins to resemble his true form. If he uses too much power, the Supreme One will learn of his location and attempt to capture him. The berserk version, called Scarlet Exetior, more closely resembles a demon.

Exetior is the main antagonist of the Sonic.exe: Nightmare Universe series.

He is a former Supreme Elite Being who, at a young age, received the blessing of the supreme energy of Chaos. His own kind immediately despised him, as this being's gifts typically led to terrible events that upset the balance and tipped the scales in favor of the Supreme Being.

Due to a dispute over his crowning achievement, Mobius, he began disguising himself as the Demon of Sharpness, roaming the universe without fear of interference from the Supreme One, gathering forces for the impending war. Unfortunately for Exetior, he lost the war and was imprisoned in the Phantom Prison. During this time, his Supreme Form began to deform, transforming into a demonic creature with spiked wings.

Transforming into an Archdemon allowed him to escape the Phantom Prison, but unfortunately for him, every planet he tried to hide on was eventually discovered by the Supremes. He then decided to hide on Mobius, assuming the form of Sonic.