He has small sharp red teeth with four giant arms with red clawed hands. His true form can be seen peeking in his black torso in the form of a small eye blinking out. He has red shoes with black bands and a small swirling tail, The Fused EXE’s appearance get’s progressively sharper as he acquire more souls. His spikes rise upwards, and his back spikes get much bigger and wider. He also starts standing on a straight posture as oppose to his initial crouching position that he uses to hide his true height. (He is truly really tall.) and Fatal Error Sonic and Rewrite Sonic Fused together as one huge Fusion EXE

Fatal Rewrite Aka Fusion.EXE: Hello there mortal i will take your soul stuffed into a red ring just like others did He smiles with Calm tone