Matt Hartwell (Claremont, California) is a full-time visual designer, educator, and adjudicator. Hartwell has marched with The Cavaliers Drum and Bugle Corps (2005, 2006, 2007, and 2008) and Aimachi Marching Band (2007). He taught at the Santa Clara Vanguard from 2010-2021, serving as the Visual Caption Head from 2017-2021. In 2022, Hartwell taught both The Blue Devils and The Bluecoats. He currently serves as the Visual Caption Head at The Phantom Regiment Drum and Bugle Corps. Hartwell taught George Mason University Indoor Percussion from 2010-2013 and has held the title of Visual Caption Head and Staff Coordinator for Pulse Percussion since 2017.