Mira was born in Stoneham, Massachusetts on August 5, 1983 and grew up in Lowell, Massachusetts. He is the youngest of four children. His parents are John and Mary Mira. He has two older sisters Kimberly and Julie, and an older brother John. He was raised Catholic, and attended Lowell Catholic High School. After high school he attended local colleges. He left Massachusetts for Los Angeles in 2007 to pursue a career in comedy.