Mantaur

In 1991, under the ring name Bruiser Mastino, Halac traveled to Germany to work for the Catch Wrestling Association. He debuted on November 11, in a losing effort against Rambo for the World Heavyweight Championship.[6] He remained with the promotion until late 1994, when he returned to the United States to perform for the World Wrestling Federation.[7]

Halac wrestled his first two matches as Bruiser Mastino defeating Nikolai Volkoff on August 25 and 26, 1994, at house shows. A few months later on the January 7, 1995 episode of Superstars of Wrestling (taped on December 10, 1994), Halac debuted in the World Wrestling Federation as Mantaur, defeating Walter Slow.[7][8] The Mantaur character was that of a Minotaur who charged, trampled and mooed at opponents.[9] Soon after debuting, he acquired Jim Cornette as his manager.[10]

Mantaur then began a small winning streak, defeating a series of jobbers. He came close to beating then-Intercontinental Champion Razor Ramon, but lost the match by disqualification due to interference by Jeff Jarrett, who was involved in a feud with Ramon at that time. Mantaur made his first and only pay-per-view appearance at the 1995 Royal Rumble, where he competed in the Royal Rumble match and lasted nine minutes before being eliminated by Lex Luger.[11]

Mantaur was defeated by World Champion Bret "The Hitman" Hart during a taping of Wrestling Challenge in Moline,IL on April 26, 1995.

Mantaur entered the 1995 King of the Ring tournament but was pinned by Bob "Spark Plug" Holly in a qualifying match.[12] In his final televised WWF match, he lost to Bam Bam Bigelow as part of a push to enhance the popularity of Bigelow as a babyface. Halac made his last WWF appearance as a lumberjack in a lumberjack match between Sycho Sid and Diesel at In Your House 2.[13]

After leaving the WWF, Halac returned to his Bruiser Mastino ring name and joined Extreme Championship Wrestling. He debuted there on December 1, 1995, with a victory over The Dark Ninja.[14] Eight days later, he lost to Hack Meyers at December to Dismember.[14] A few weeks after that, he lost to 911.[14] At Holiday Hell, Mastino defeated El Puerto Ricano in his final match for the promotion, in which he was jeered with "Mantaur" chants from the always-vocal ECW audience.[14] Halac then briefly returned to the Catch Wrestling Association as Terminator Mastino.[2][14]

In April 1996, Halac returned to the WWF playing the role of Goldust's unnamed bodyguard.[2] He appeared with Goldust at In Your House 7 in his corner for his match against the Ultimate Warrior. After Goldust lost, the bodyguard attacked Warrior but was overpowered and body slammed.[15]

Halac then worked in the United States Wrestling Association as Tank, a member of The Truth Commission where he wore a mask.[2] He won the Unified World Heavyweight Championship, his first and only wrestling title, on March 15, 1997, after defeating then-champion Jerry Lawler.[16] He lost the belt back to Lawler in a rematch seven days later.[16] Later that spring, Tank was involved in a controversy surrounding the World Tag Team Championship. While The Interrogator and Recon (Tank's teammates in The Truth Commission) held the title, Tank substituted for The Interrogator in one match and his team lost the title to Nick Dinsmore and Flash Flanagan.[17] The title change was declared invalid, however, as Tank was not one of the official holders of the World Tag Team Title.[17] He returned to the WWF in June 1997 with the Truth Commission as he fought as Tank. He was on two Shotgun Saturday Night episodes for 6 tag matches until his release later that summer.

Halac wrestled a dark match for World Championship Wrestling's Monday Nitro, defeating Damián 666 on September 22, 1997, in his only appearance for the company.

Halac returned to the CWA in September 1998, again as Bruiser Mastino.He wrestled three matches for NWA Germany later that year, winning the first against Franz Schumann on September 22, losing the second to Ulf Herman September 23, and losing the third to Shumann on December 2.[18] He also competed in the European Wrestling Promotion (EWP), defeating Christian Eckstein on November 25.[18] Halac returned to the EWP on May 18, 2001, winning a triple threat match against Eric Schwarz and Martin Nolte. The next day, he defeated Big Tiger Steele.

Halac returned to wrestling on June 3, 2005, in Germany for one night only for Riotgas Wrestling Alliance. He won a battle royal and later that night fought his cousin Cannonball Grizzly for the RWA International title which Grizzly won.

On June 2009, Halac along with his cousin PN News promoted an independent tour entitled "Beach Brawl 09" with two shows at Fun Plex in Omaha, Nebraska and concluding in Hartington, Nebraska. The tour included Alex Shelley, Homicide, Matt Morgan, Lenny Lane and Chad Collyer. On the first show of the tour, Halac (as Brusier Mastino) teamed with News (as Cannonball Grizzly) as Big O Incorporated in a winning effort against Matt Morgan & Homicide.

He lost to Tito Santana at Pro Wrestling Syndicate in Metuchen, New Jersey on December 7, 2012.

In May 2015, as "The Turkish Terror" Madd Mustafa, he won the American Heritage Wrestling Heavyweight Championship at their inaugural event in Adel, Iowa.[19]

In September 2016, Halac returned to Germany for European Wrestling Promotion where he teamed with Thunder against PN News and Christian Eckstein in a no contest.

On November 28, 2018, Mantaur was an inaugural inductee into the Omaha Pro Wrestling Hall Of Fame at the PWP Live "Wrestlerama" event at The Waiting Room Lounge in Omaha.[20]

Most recently he wrestled as Mantaur at GCW's Joey Janela's Spring Break 3 Part 2 in a Clusterfuck Battle Royal which lead to a no contest in Jersey City, New Jersey.