Mr. Yates is a character in DEXTER.
He is the decrepit father of A.J. Yates, a young serial killer of women. He is comatose at the start of Season 8. When Dexter Morgan attempts to lure A.J. to him, Dexter calls and tells A.J. that his father's condition has become worse and that he should come to the hospital. When A.J. does so, Dexter corners him in his father's hospital room. A.J. then pulls the plug on his father's life support in order to create a diversion for himself to escape, while several nurses rushed to Mr. Yates's aid. It is unknown if he survived or not.