Michael Moscovitz is a fictional character from the Princess Diaries series written by Meg Cabot. He is introduced as the older brother of Mia Thermopolis's best friend, Lilly Moscovitz. Michael is portrayed as intelligent, kind, and supportive, often helping Mia navigate her challenges as she discovers her royal heritage. In the series, Michael is also a talented musician and has a passion for technology. His character develops a romantic relationship with Mia, adding depth to the storyline. Throughout the books, Michael's loyalty and understanding play a significant role in Mia's journey of self-discovery and growth.