Pac and Floyd, not Greater than this Fighter, who is it?

Who is it? Some hints: He is still active. He doesn't care how Tall or Heavy you are. He'll fight you. He'll even fight you when you are in your prime and at your best and he is not. He is one of the toughest S.O.B.'s to grace the ring. He has Won many titles, in more than one division. He is not big but will fight the biggest, baddest, opponent at any time. Personal life: He is a man of God. He has many children. And he prefers women over Fat Boys.