Mannimarco is correct. Akuma is a warrior who fights bare handed, but unlike Ryu and Ken, he went full tilt down the path of power. His martial arts prowess is amplified by his own demonic nature and raw power. He does not shy away from gaining power in any form and taps into his own dark energies, rage, and hate to fuel is combat. His Oni form is basically a demonic version of himself and represents his ultimate incarnation.
Mannimarco is correct. Akuma is a warrior who fights bare handed, but unlike Ryu and Ken, he went full tilt down the path of power. His martial arts prowess is amplified by his own demonic nature and raw power. He does not shy away from gaining power in any form and taps into his own dark energies, rage, and hate to fuel is combat. His Oni form is basically a demonic version of himself and represents his ultimate incarnation.