Kain R. Heinlein

Kain R. Heinlein is the brother of Geese Howard's late wife, the mother of Rock Howard. After witnessing the violent death of a child in the streets, had enough of the slums and declared his ambitions for power. When he was eight years old, he entered a street fight and his strength was recognized by a wealthy kingpin named Don Papas. Adopted into the family thereafter, Kain eventually overthrew his benefactor and became the head honcho of the gang. Kain wanted Rock Howard to join them, so he created the "King of Fighters: Maximum Mayhem" tournament and invited several fighters, including Rock and his mentor, Terry Bogard.

Kain is calm, careful, strong-willed and a serious man; he is also very ambitious, but not a megalomaniac. He hates emotions as, according to him, they breed conniving and bias.

2D Fighters
Kain was eliminated by Asura in the opening round