Street Fighter IV 'Akuma' action figure
Akuma (known Gouki in Japan) trained under Goutetsu along with his brother, Gouken. Goutetsu taught them Ansatsuken (Assassin Fist), which is a mixture of karate, judo, and koppo. As the brothers progressed under Goutetsu's teachings, a dispute arose on the true nature of Ansatsuken and the path to master it. Gouken, unable to accept the violent nature of Ansatsuken, left Goutetsu to begin his own dojo. Akuma continued Goutetsu's teachings and vowed to use Ansatsuken as it was intended.
In order to learn Shun Goku Satsu, Akuma embraced the principle of Satsui no Hadou or (The Surge of the Intent to Murder/Murderous Intent). Through Satsui no Hadou, Akuma was forced to give up any compassion he held towards other human beings. In addition, Akuma realized his limits as a martial artist could be expanded, and left Goutetsu's guidance to train alone on an island (Gokuento).
Basically, Akuma is not a man to be messed with, if you value your life, that is.
Akuma comes with 2 sets of hands and 35 points of articulation.