Maynard James Keenan (born April 17, 1964 as James Herbert Keenan) is an American rock singer. He has been a member of the bands Tool since 1990, A Perfect Circle since 1999 and Puscifer since 2003
He has also worked with TexA.N.S.,Children Of The Anachronistic Dynasty, Green Jelly and Tapeworm. Keenan was born to a Southern Baptist family in Ravenna, Ohio on April 17, 1964. He joined the Army in 1982, studying at the United States Military Academy prep school from 1983 to 1984.