Manny Fernandez was born in El Paso, Texas, but moved to San Jose, California at an early age. He served in the United States Navy as a member of the Navy SEALs before attending West Texas State University, where he played football.

After a three-year stint in the National Football League with the Kansas City Chiefs. Not to be confused with the other Manny Fernandez who did play for the Miami Dolphins as a defensive lineman from 1968-1975. He graduated from Utah. "The Raging Bull" Manny Fernandez graduated from West Texas State. He began wrestling in 1978 in Florida Championship Wrestling. He wrestled in Texas and Kansas City before arriving in the NWA's Jim Crockett Promotions in 1984. .

He formed a tag team with Dusty Rhodes and they won the NWA World Tag Team Titles from Ivan Koloff and Don Kernodle. They feuded with them and Ivan's "nephew" Nikita Koloff until losing the titles to the Koloffs in early 1985.

Manny soon became involved in a feud with Arn Anderson after being attacked by Anderson and laid out. He teamed with Thunderbolt Patterson to feud with Arn and Ole Anderson.

In late 1985, he started helping Jimmy Valiant in his war against Paul Jones and his "Army". He formed a team with Valiant called the B and B Connection ("Boogie Woogie" & "Bull"). He had some matches against Abdullah the Butcher and The Barbarian. He also formed a tag team with Hector Guerrero in 1986 called The Latin Connection. In the summer of 1986, Manny accepted Jones' money and turned on Valiant starting a feud between the two. Later in the year, Jones also brought in Rick Rude and he paired them together and they won the NWA World Tag Team Titles from the Rock 'N Roll Express. They feuded with the Express until June 1987 when Rude left the promotion.

Manny teamed with Ivan Koloff for the rest of the summer and left for the Mid-Southern promotion in late 1987. He was soon in the American Wrestling Association feuding with Wahoo McDaniel after he attacked Wahoo and destroyed his headdress. After that feud ended in late 1988, Manny headed to Puerto Rico's WWC where he stayed through 1991 and then he headed to the independent circuit.

As of 2005, he wrestles primarily in the Texas independents.

In March 2005, Manny announced that he has cancer. He has refused chemotherapy for it.