John Kirby

John Kirby is the district attorney who was working on Alex Karev's case.

History
When Alex decided to take the plea and go to prison for two years, he went to John Kirby's office. While they waited for Alex's lawyer to arrive, they were shocked when Andrew DeLuca came through the door and said he wants to drop the charges. When he was informed that they weren't his charges to drop, he said he'd get on the stand and say that he and Alex got in a fight that he started and it didn't end well. Kirby asked if Alex had threatened him and he said Alex hadn't. He apologized for wasting Kirby's time and left.

Career
He is the district attorney.