Frank Bello (born July 9, 1965) is an American musician who plays bass for the thrash metal band Anthrax.
Bello is the nephew of Anthrax drummer Charlie Benante. He had a younger brother Anthony, who was murdered in the Bronx, New York City, in 1996. His murder was never solved. Bello has a tattoo on his right upper arm with a design of Anthony's face, with the words 'In Memory of Anthony' below it.
Bello was originally a roadie and guitar technician for Anthrax, but later replaced Dan Lilker soon after the release of the band's 1984 debut album Fistful of Metal, and has held this position ever since, excluding a brief departure in 2004 in order to join Helmet – another New York City-based metal band. His stint in Helmet was brief, as Bello reunited with Anthrax the following year, and (as of 2014) has remained in the band since.

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