Mike Halac was born on May 14, 1968, in Omaha, Nebraska.
He began his wrestling career in 1991, wrestling in Germany and Austria under the name Bruiser Mastino.
He debuted in the World Wrestling Federation (WWF) on January 7, 1995, as Mantaur, a character with a large bison head atop his body.
Mantaur had a brief run in the WWF, feuding with wrestlers such as Razor Ramon and Bam Bam Bigelow.
He also appeared in the 1995 Royal Rumble match. Mantaur left the WWF in 1995 and continued to wrestle on the independent circuit.
He retired from wrestling in 2001.