The Spirit Squad debuted on the Raw brand in January 2006, and quickly won the World Tag Team Championship in April.

[3] Competing as "Livewire" Mike Mondo he won the NYWC Heavyweight Championship from "Superstar" Dickie Rodz on June 7, 2003, holding it for approximately two months, until he vacated it.

He appeared in several dark matches prior to the television tapings against wrestlers including Tank Toland, Joey Matthews, and Carly Colón.

Embarrassed by losing to a female wrestler, Mondo issued an open challenge to any woman backstage, and a result, lost to Victoria.

[3] In late 2005, Mondo joined the Spirit Squad, a faction of five wrestlers using the in-ring personas of male cheerleaders, as Mikey.

The heel (villainous) McMahon brought in the Spirit Squad to attack Michaels on numerous occasions, including placing them in multiple handicap matches.

[19][20][21] After two consecutive losses to the debuting Cryme Tyme tag team, Kenny attacked Mikey on the October 23 episode of Raw and announced that he was going to defeat Flair.

With the help of the other Spirit Squad members, Kenny was successful, despite Flair being accompanied to the ring by his own reinforcements (Dusty Rhodes, Sgt.

[25] Brendli, under the name Mikey Mondo, appeared at the January 17 OVW taping along with Nick Nemeth and teamed with Mike Kruel in a match against Seth Skyfire, Shawn Spears, and Cody Runnels.

[28][29] In September 2007, Mondo was moved to the Florida Championship Wrestling (FCW) developmental territory and defeated Chris Gray in his debut there.

[32][33] Having dubbed himself "Mighty Mikey", he went to wrestle Ted DiBiase Jr., Sinn Bowdee, Heath Miller, and Jack Gabriel throughout the early part of 2008.

[34] After his WWE release, Brendli returned to competing on the independent circuit, and, in an interview in December 2008, said he plans to wrestle in Mexico and Japan.

[1] He competed for several independent promotions, including Division I Pro Wrestling and Ward Family Entertainments, where he reprised his feud with Rory McAllister of the former WWE tag team, The Highlanders.

[36] He also returned to the New York Wrestling Connection on September 20, 2008, at Draw The Line, where he teamed with Mikey Whipwreck in a losing effort to Rob Eckos and Frederick of Hollywood.

[39] On November 12, 2016, wrestling as The Spirit Squad, Mondo and Doane captured the NYWC Tag Team Championship from Hounds of Hatred (Boo and Bam Sullivan) at Firestorm 3.

[47] On March 5, 2011, Mondo regained the OVW Heavyweight Championship by winning a three-way ladder match, also involving Cliff Compton and "Low Rider" Matt Barela.

Making his ROH pay-per-view debut at Border Wars, he teamed with the Young Bucks to lose to Perkins and The All Night Express of Kenny King and Rhett Titus.

Following the loss, Mondo defeated Kyle O'Reilly in a qualifying match for the 2012 Survival of the Fittest tournament, but lost in the final to Jay Lethal.

At Glory By Honor XI: The Unbreakable Hope, Mondo lost to Mike Bennett, suffering a leg injury in the process which sidelined him for several months.

At Supercard of Honor VII, Mondo, B. J. Whitmer, Caprice Coleman, Cedric Alexander, and Mark Briscoe lost to five members of S.C.U.M.

He made a further return at television tapings in April 2017, when he and Kenny unsuccessfully challenged The Young Bucks for the ROH World Tag Team Championship.

[56] In late 2016, Brendli, as Mikey, alongside Kenny, returned to WWE for a short storyline with Dolph Ziggler (formerly Nicky in the Spirit Squad).

[1] Brendli is good friends with his former Spirit Squad teammate Nick Nemeth (better known as Dolph Ziggler), and the two lived together in Florida until 2008.