Christogonus Ezebuiro Obinna (1947 – 2 June 1999), alias Dr. Sir Warrior, was the leader of the Oriental Brothers International Band which was famous in the Nigerian Igbo highlife music scene for several decades. He performed primarily in Nigeria, as well as performing internationally in places such as London and the United States of America with his crew. Originally, the founder of the group is Ferdinand Emeka Opara.
