CYBER-AKUMA

Cyber-Akuma is created by Apocalypse and serves as the final boss in Marvel Super Heroes vs. Street Fighter. He may have the same special moves as the original Akuma, but his special moves are upgraded with his rocket launching arm and are more powerful that it can deal with a massive amount of damage. However, his attacks are blockable and avoidable. After defeating Cyber-Akuma, a special ending for a character will be shown. First and only capcom character to ever be a final boss

AKUMA

Akuma, known in Japan as Gouki, is a video game character created by Capcom. Originally appearing in Super Street Fighter II Turbo as a secret character and hidden boss, he has red hair, wears prayer beads around his neck, and wears a black gi (occasionally displayed as blue in artwork). The kanji 'ten' (天) - meaning "sky", "heaven", or "providence" - can be seen on his back when it appears during certain win animations. Capcom had stated that the symbol on his back meant "immortal" for Akuma even though there are many different translations. He is voiced by Tomomichi Nishimura in many of the games in which he has appeared.

In the Marvel Vs Capcom game, He seems to be "working" with Doctor Doom and his army of villains. However, his true desire is to challenge Galactus himself.
Akuma's considered the first character to debut in the Cross-Over series, since he is a secret character on X-Men: Children of Atom, making him the very first Street Fighter/Capcom character to appear in a Marvel related game.
kuma is one of the sub bosses before fighting Galactus. The other sub bosses are Doctor Doom, Albert Wesker and Dormammu. However, you only fight 2 of them and are randomly chosen.
Akuma is the only character, other than Amaterasu, to not call any character by their real name.

AKUMA

Akuma , known in Japan as Gouki , is a popular fighter in the Street Fighter series.

Originally appearing in Super Street Fighter II Turbo as a secret character and hidden boss, He is Gouken's younger brother and Ryu's adoptive uncle. He has red hair, wears prayer beads around his neck, and wears a black gi (occasionally displayed as blue in artwork). The kanji 'Ten' (天) - meaning "sky", "heaven", or "providence" - can be seen on his back when it appears during certain winposes. He is voiced by Tomomichi Nishimura in many of the games in which he has appeared.

Akuma fights only to test his strength and his opponent's. This means that he will only fight opponents that will provide a challenge, hence his refusal to fight unworthy challengers under any circumstances. Akuma will only kill opponents who are as strong as he, which is why he stopped his fight with Gen after realizing that he was ill. While Akuma attacked his brother and his teacher, he did so in the confines of the code of the warrior, where the field of battle does not distinguish between friend and foe. Akuma believes he committed no transgression whatsoever. Also, with the exception of Gouken and Goutetsu, Akuma usually only fights those who challenge him instead of picking fights, although, a common game mechanic is to allow players to fight him when certain conditions are met, implying that the character the player is using is "strong enough" to pose a challenge to Akuma.