Frank Anthony Iero, Jr. (born October 31, 1981) is the rhythm guitarist and backup vocalist of the alternative rock band My Chemical Romance and the vocalist of the hardcore punk band Leathermouth. He was born in Belleville, New Jersey and attended Queen of Peace High School in North Arlington.[citation needed] He went to Rutgers University on a scholarship, but dropped out.

Iero’s parents split when he was young and he grew up living with his mother, who lent out her basement to her son’s many band practices; his father was a musician and a big influence on young Iero wanting to learn an instrument. He first tried drums, later picked up the guitar instead, and began playing in bands at age 11. When Iero was younger he suffered from Epstein-Barr virus, ear infections & bronchitis. He suffered numerous lacerations to his head, hands, and knees.

Before joining My Chemical Romance he participated in several bands, including I Am A Graveyard, Pencey Prep, Hybrid, Sector 12, and Give Up the Ghost. Iero is the frontman of hardcore punk quintet Leathermouth, who released their debut album XO in January 2009, on Epitaph Records. He is involved in a tribute band to The Cure named The Love Cats, after the song of the same name, and recently played bass with Reggie And The Full Effect on their farewell tour. Iero is the co-founder of record company and clothing label Skeleton Crew.

On March 17, 2010, Iero announced in the My Chemical Romance official website that he and his wife, Jamia Nestor, are expecting twins. The children are expected to be born in late summer, 2010.