Harley Francis Flanagan (born 1967) is a founding member and former bassist of the crossover thrash band Cro-Mags.
At age 12, Flanagan was the drummer for The Stimulators. When he was nine, Flanagan published a book of poetry with a foreword written by family friend, Allen Ginsberg.
Flanagan is the father of two sons and is married to Laura Flanagan (formerly Laura Hill), who is a PhD in English and works as general counsel for a wealth management firm.
Flanagan, who is a black-belt in Brazilian jujitsu, currently works as an instructor for Renzo Gracie Academy. His students at the Academy include the two daughters of TV chef Anthony Bourdain, who coincidentally attended NYC Stimulators concerts in the early 1980s, and was a fan of the then preteen drummer.
Flanagan has been a vegetarian for most of his life.
Flanagan's autobiography, Hard-Core: Life of My Own, was published by Feral House in 2016, and contains an introduction by Steven Blush. As of October 14, 2016, it is ranked as the #1 seller in martial arts biographies by Amazon.
As reported by Rolling Stone magazine, he is currently collaborating with Madison Square Garden organist Ray Castoldi and rock musician Chris Clemence on a song called "Let's Go", which will be played at MSG sporting events. Flanagan is a co-writer of the song, and will be singing lead vocals.