B. Brian Blair and "Jumping" Jim Brunzell were both signed by the WWF in 1985, debuting under the "Killer Bees" name. Because Blair and Brunzell were similar in build, the team had a special gimmick referred to as "Masked Confusion" where both wrestlers would put on identical masks during the match to confuse the opponents and referee and usually win that way, despite this normally being a tactic used by the heels.
One of the most amusing highlights of the team's career came in 1987 at a house show. With Blair unable to appear for the team's match against Demolition, he was replaced by S.D. Jones, an African-American journeyman who wore the Bees' black and yellow tights for the day. During the match, the two used the "Masked Confusion" tactic and the referee, as usual, pretended to be unable to tell the two apart, despite Brunzell being very light-skinned. The inverse would occur later, as S.D. Jones would later replace Brunzell and team up with Blair on Prime Time Wrestling against Demolition as well.
The team debuted on June 17, 1985, defeating the team of Steve Lombardi and Dave Barbie. After facing several makeshift teams, the Killer Bees started a long-running feud with The Hart Foundation (Bret Hart and Jim Neidhart). The Bees also had a running feud with the Funks (Hoss, Terry and Jimmy Jack). The team also received a couple of unsuccessful shots at then-WWF Tag Team Champions The Dream Team.
The Killer Bees were a part of a battle royal involving wrestlers and NFL players at WrestleMania 2 and next got the spotlight at WrestleMania III, where they faced The Iron Sheik and Nikolai Volkoff, losing by disqualification because of the interference of Jim Duggan. After WrestleMania III, the Killer Bees moved on to a feud with WWF newcomers Demolition. By this point, the Bees' stock was clearly slipping in terms of their card placement, though they were one of two teams (with The Young Stallions) to "survive" the 10-team elimination match at the inaugural Survivor Series on Thanksgiving Day 1987. The Bees' last WrestleMania appearance would be at WrestleMania IV, where they once again competed in a battle royal.
The Killer Bees’ last prominent appearance was at "WrestleFest" in summer 1988, where they lost to The Fabulous Rougeaus. In the summer of 1988, the Bees split up off-screen without any break up or announcement, and Brunzell and Blair returned being used as "preliminary wrestlers" thus (at least temporarily) ending the yellow and black days of the Bees. The duo's last WWF match as a team came on August 24, 1988, against The Young Stallions.