A demonic, murderous incarnation of the blue blur, Sonic.EXE is ruthless, violent, sadistic, and monstrous, especially in his methods of killing his victims, preferring to perform horrible acts of mutilation or prolonging their inevitable deaths just for the sake of it. Completely devoid of remorse or empathy, Sonic.EXE had slaughtered many innocent animals prior to Tails' demise and even relishes in the fear he instills within his victims. He's a bit stronger then his First Form.