Type of character known as agent kay in Men in Black?

Agent K, portrayed by Tommy Lee Jones in the "Men in Black" series, is a stoic and seasoned agent who serves as a mentor to the new recruit, Agent J. He is characterized by his dry wit, no-nonsense attitude, and deep knowledge of extraterrestrial life and intergalactic law. Throughout the series, K's mysterious past and emotional depth are gradually revealed, adding complexity to his character. His role highlights the balance between authority and camaraderie within the Men in Black organization.