Nitroblast is the gang's safecracker specialist. His laser-guided plasma blowtorch cuts through just about anything and breaks through any security system in seconds.
He is Fire Lord's most loyal henchbot, so much that even the other fire villains make fun of him kissing Fire Lord's armor in reverence. But he is completely loyal to Fire Lord.
Nitroblast and the rest of his gang have just attacked Hero Factory Tanker Station 22, where they are trying to drink every drop of fuel they can find.