Mr. Jay is a YouTuber, rapper and actor known for series such as Epic Rap Battle Parodies, JMB rap battles, and the current ongoing series Mr. Jay’s Epic Rap Battles.

He started in 2012, along with Nathan Roy Provost and later on WoodenHornets, the Epic Rap Battles Parodies series, that later on inspired and helped create the entire rap battle subgenre. In 2014, he then started JMB rap battles. The series would end in about 2018 but would return for a last video, and a complete new series called Mr. Jay’s Epic Rap Battles.