That's the Vamp! The knifing killer in Metal Gear Solid 4.. He was also the psychopathic maniac in a grim film called Borderland (2007).
Didn't know he was a singer/entertainer. He sings pretty well.
Then again the character known as Vamp did pull-off a dozen mexican/latino-style dancing moves in all his confrontations in that video game particularly against the poor Raiden. It would make sense why Kojima the rip-off American-loving playboy would copy material off Hollywood stuff to add in his Metal Gear games. A dozen of which I played enthusiastically before I quit the fourth one for its conceitedness very much like the second one.
The Vamp had a good body. I noticed it at the height of self-admiring my own.