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

In the mission Highway to Hell from the Mister Torgue's Campaign of Carnage DLC you have to defeat enemy burners belonging to Pyro Pete

These include:

Burner Enforcers

Burner Bruisers

Burner Gremlins

Burner Biker

Area

Badass Crater of Badassitude

(Burners will be encountered in many other areas of the DLC)

Mission

Highway to Hell

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