John Joseph McGowan (born October 3, 1962) is an American musician and author, most famous for his work as the lead singer of the hardcore band Cro-Mags. He is currently the vocalist of Bloodclot. McGowan was raised in foster care, and grew up on the streets of New York City. McGowan joined the New York City hardcore punk band Cro-Mags in 1981 as the lead singer and then again from 1984 until 1987, taking over on vocals from Eric Casanova. And rejoined in 1991 - He sang on a demo and wrote lyrics on the band's first, third, and fourth albums (The Age of Quarrel, Alpha Omega, and Near Death Experience). He also sings lead on the Before the Quarrel CD, essentially a reissue of the demo. Before, during, and after his time in the Cro-Mags, McGowan served as a roadie for Bad Brains, and portrayed a mentally handicapped Santa Claus in a wheelchair pretending to beg for donations. He returned to the Cro-Mags briefly in the 1990s. McGowan has also sung for the bands Both Worlds and Bloodclot. His autobiography, The Evolution of a Cro-Magnon, published in 2007, details the major events in his life, including his extensive involvement with the hare krishnas, as well his experiences with the Cro-Mags and Bad Brains. Interviews with McGowan were featured in the 1999 documentary N.Y.H.C. as well as the 2006 documentary American Hardcore.