Borderlands 2: Pete's Burners

Pete's Burners include a Burner Enforcer such as this one

In the mission Highway to Hell from the [Borderlands 2: Mister Torgues Campaign of Carnage DLC|Mister Torgue's Campaign of Carnage DLC]] you have to defeat enemy burners belonging to Pyro Pete

These include:

Burner Enforcers

Burner Bruiser

Burner Gremlin

Area

Badass Crater of Badassitude

Mission

Highway to Hell