Arnold Hamilton, better known by his stage names Frukwan, Gatekeeper or Fruitkwan, is an American rapper and record producer from New York City, New York. He began his career as a member of Stetsasonic, and released three albums with the group. As a member of the group, he contributed to the song “Self Destruction” by the Stop the Violence Movement alongside several notable hip hop stars. After the dissolution of Stetsasonic, he became a member of Gravediggaz alongside RZA, Poetic and fellow former Stetsasonic member Prince Paul, assuming the name of the Gatekeeper. Gravediggaz have released three studio albums.

Frukwan embarked on a solo career in 2003, releasing the album Life. In 2009, he released his second studio album Greatness. Both albums experienced little success.

Little else is known about Frukwan.