" I guess I had to repeat this list just for you Mr. Murphy ex is the variable... ROCKSTAR. Solve for X!"
- Mr. DurkinMr. Durkin is Kevin Murphy's summer school teacher and Minor Antagonist in Season 3. He is known for abusing his students anytime they misbehave. After his car derailed the train to Pittsburgh (thanks to Nuber's gang, who put it there), he was later arrested.
He was voiced by Phil Hendrie.
Mr. Durkin is an abusive, strict teacher; he had been getting a seriously bad reputation with his own students, including Nuber and his gang of bullies. He even has no problem humiliating Kevin upon learning of his rock star dream.
He is also shown to have money problems, as he owns a dilapidated car with trash bags as windows. This leads Kevin to mock him for this as payback for humiliating him, starting up the chant "Jerkin's got no money!" in class.