Chuck Kool Koor Hargrove, known as "Koor" (which is the inversion of the Dutch word "Rook", smoke) was born in the Bronx, New York and grew up around artists.  His mother and his sister are artists.  In 1976, at the age of thirteen he started writing Graffiti.  Although being a graffiti painter from the first generation he never painted on subway trains.

"What got me into it?  I saw a girl in my building writing GLORIA on a yard wall outside of my second floor apartment window.  So I yelled at her and she cursed me out and kept on painting.  Well I said to myself that if she could do it, so could I.  So I went out into the hall ways and started writing MELLOW C.  That same week I went up to the eighth floor of my building to see A-One and talked him into going writing with me."

Koor is inspired by new science and technology.  He calls his work "Futuristic Symbolism".  The robot appeared many times in his older work.  His first show he did at the age of 16.  It was the big Fashion Moda show of 1980.  Together with his friend Rammellzee and other artists like A-One, Quik, Dondi White, Crash and Futura he stood at the basis of the New York Graffiti Street Art Movement.

Kool Koor is living and working in Brussels.