Shin Kazuma is a special version of the character Kazuma, from the Galaxy Fight: Universal Warriors, or simply Galaxy Fight, which is a 1995 arcade fighting game originally developed and published by Sunsoft for the Neo-Geo MVS arcades.
In M.U.G.E.N, Shin Kazuma has been created by O Ilusionista. Rather than using the gameplay system of the character's source, Shin Kazuma uses a Marvel vs. Capcom-esque system with Mortal Kombat features, such as Fatalities and Animalities.
The character contains a very aggressive A.I., which makes him hard to be beaten. He has some magic scroll features, which gives him magical powers, like invincibility and even a self kill move, which kills himself and the enemy too.
This character does not have any victory quotes, meaning it uses the screenpack's default.