Marlhy Murphy (born June 29, 2002), is an American musician, actress, television personality, and internet personality. For her solo music, she goes by the mononym Marlhy. She has worked with bands such as the Regrettes, Pretty Little Demons, Zeppos, We're Not Dudes, and Purple Hats and Jetpacks. She is the youngest performer to ever perform at South by Southwest, and has appeared in Kids React, Nickelodeon's React to That, Amazon's A History of Radness, 2010's The Key.