In October 1993, Axl Rotten and Ian Rotten made their debut for Extreme Championship Wrestling (ECW). In their debut, they defeated the makeshift team of Chad Austin and Todd Shawn on October 1, but lost to Badd Company (Pat Tanaka and Paul Diamond) less than two hours later. The next night, they main evented the show in a loss to Public Enemy in a "three-way steel cage match" (the third team was Badd Company). A few weeks later, the Bad Breed unsuccessfully challenged for the ECW Tag Team Championship as they lost to champions Tony Stetson and Johnny Hotbody. The Bad Breed gained a measure of revenge by defeating Stetson and Hotbody on November 12 in a non-title match.
In June 1994, the Bad Breed started a feud with Public Enemy over the ECW Tag Team Titles, but throughout the feud the Bad Breed was never able to defeat Public Enemy for the gold. After feuding with Public Enemy, the Rottens next targeted The Pitbulls, this feud led to the two teams facing off at November to Remember in a match where the losing team was forced to split up. The Bad Breed lost when Pitbull #2 pinned Ian.
Since the brothers both blamed each other for the loss, they began a feud against one another after teaming together for two years. The first match between the two "brothers" was at Double Tables on February 4, 1995, which Ian won. They next clashed in a “hair versus hair” match on the April 8 show Three Way Dance. After being shaved bald, Ian came looking for revenge at Hostile City Showdown 1995 only a week later, this time in a “Barbedwire Baseball Bat” match, but once again Axl beat his “brother”. Their final match took place at Hardcore Heaven in a Taipei death match.