|Origin||Plymouth, Minnesota, United States|
|Labels||Tooth & Nail|
|Associated acts||Guerilla Rodeo, Relient K|
Ace Troubleshooter (often shortened to Ace) was an American pop punk band formed in December 1995, signed to Tooth & Nail Records. According to John Warne, he came up with the band's name after reading the phrase ace troubleshooter in a history book.
Death of Ace
After years of personnel changes and steady touring, Ace Troubleshooter came to an abrupt end in February 2005 when lead singer John Warne left to play bass for Relient K. Toby David posted the announcement of the band's breakup on their message board. 
The Ace Troubleshooter lineup changed several times. The band started as a 3-piece, consisting of John Warne, Josh Abbott, and Matt Pacyga. They added Isaac Deaton as the second guitarist in 1998 and remained a 4-piece moving forward. Numerous bassists and guitarists rotated through, even featuring Dave Douglas, current touring drummer for Relient K, as a guitarist for a short time. Only two original members remained when the band came to an end. Those two members, John Warne and Josh Abbott, both played in the short-lived band Guerilla Rodeo shortly before Ace disbanded. After the breakup, John went on to play for Relient K and Josh went on to play for My Red Hot Nightmare.
- John Warne - lead vocals, guitar (1995–2005)
- Josh Abbott - drums (1997–2005)
- Toby David - guitar (2003–2005)
- Joe Krube - bass, backing vocals (2003–2005)
- Matt Pacyga - bass (1997-1999)
- Cody Oaks – bass (1999–2001)
- Isaac Deaton – guitar, backing vocals (1998–2003)
- Dave Douglas – guitar, backing vocals (2001)
- Jimmy Taylor – guitar (2001)
- Ben Dewey – bass (2001–2003)
Friendship with Relient K
Relient K was often known as the "brother band" to Ace Troubleshooter. Relient K and Ace toured together for years, and the members were all friends with each other. This explains why Dave Douglas filled in as a guitarist for Ace at one point and why John Warne filled in as bassist for Relient K when Brian Pittman first left.
Relient K's Matt Thiessen said in 2000 that they were allowed by Ace to live on their bus, as Relient K was just starting out. This show was one of the cases where the band's schedules resulted in them playing together.
- Back in the Shootin' Match (1996)
- Don't Stop a Rockin' (1999)
- Ace Troubleshooter (2000)
- The Madness of the Crowds (2002)
- It's Never Enough (2004)