Tommy Grazer is a two-year old toddler boy. He is the titular kid in the episode Mr. Monk and the Kid.
Tommy was one of several foster children adopted by Janet Novak and her husband Raymond. At the beginning of the episode, Tommy went missing in a park, so Janet called the police. Tommy was found a short time later in the woods surrounding the park, holding a human pinky finger. Adrian and Natalie were called to the scene, and Tommy continually said "Monk! Monk! Monk!" Monk went on a walk with Tommy, hoping that he would retrace his steps and find the location of the body. They failed to do so, and, while at the lab, Monk continued to rant on about how thoughtful Tommy was. With Monk's analysis, they found out that the human finger was a violinist's pinky, because of a callus. They also discovered that he is professional because a material found in some expensive violin rosins. They tracked down eight violinists, who were all alive and had all of their fingers. While eating at a restaurant later, they saw the Carlyles, the eighth family, talking at a pay phone and appearing nervous. Monk realizes that the violinist, Daniel Carlyle, is missing, and the man they saw at the house was his brother.
They investigate, and, to pay off the ransom, they sent Monk. After giving the money to the wrong person, Monk talked to Dr. Kroger. Meanwhile, Julie Teeger was babysitting Tommy while Monk was gone. She accidentally spilled some grape juice, which Tommy cleaned up himself. Monk believed that he wanted to keep Tommy, but Dr. Kroger advised against it. At night, after Natalie left with Julie, Monk noticed that Tommy took Natalie's lipstick from her purse. He then reads a "fake" story in which Tommy was the prince, and the two foster parents were the king and queen. The king and queen abducted a fiddler (Daniel Carlyle) and to show they were serious, they chopped off a finger. They planned to hide it in the park, but Tommy, sitting by the purse, grabbed it out of the purse and wandered off. Tommy agreed with Monk that he took the finger from the bag. In the end, Tommy fell asleep, and Monk realized that he wants Tommy to stay with him, but he can barely take care of himself. Aft the end of the episode, Monk and Tommy were rolling around and playing in the grass outside the adoption center. The new parents came about, and as Monk was about to hand Tommy over, Tommy kissed him twice on the cheek, and once on the neck. He was driven away by the new parents.