He headlined the company's flagship event Euro Catch Festival twelve times between 1991 and 1999, with his each match for the CWA World Heavyweight Championship.

Before entering the world of professional wrestling, Poirier started training for shot put and discus throw as early as the age of 12 years old.

Later on in France as "Rocky Montana", and in Germany, Austria and Japan as "Rambo", he achieved his greatest success under the later ring name in the Catch Wrestling Association.

[7] He fell to Haystacks in the following year's Catch Cup in the summer,[8] but won the winter tournament by defeating Cannonball Grizzly.

On December 12, 1990, Rambo got his first match for the CWA World Heavyweight Championship, where he competed against Bull Power for the vacant title, which he lost.

[12] Upon his ascent as champion, Poirier made his first successful title defense against Bull Power on August 18 and then defeated Bruiser Mastino on November 11.

[13][14] He headlined the first Euro Catch Festival event on December 21 in Bremen, where he successfully defended his title against Ken Patera.

[17][18] Rambo lost the title to Road Warrior Hawk after a year-long reign at the Euro Catch Festival in December.

[22] He then continued his lengthy reign by retaining the title against Papa Shango at the 1994 Euro Catch Festival in Graz.

[29] Rambo regained the title from Borga at the following year's Euro Catch Festival on December 21, 1996, to become a three-time World Heavyweight Champion.

The stable fragmented after The Jackyl instructed Kurrgan to attack Poirier and Recon after they lost a series of matches.

Poirier and Recon briefly feuded with Kurrgan and The Jackyl under the name Armageddon before leaving the WWF and returned to CWA.