Overkill is an American Thrash metal band, formed in 1980 in New Jersey. The band has been active recording wise since 1984.
The band also has a notable mascot named Chaly, a skeletal bat with a skull-like face, bony wings, and green eyes. Chaly has appeared on most of their album covers. Overkill has gone through many line-up changes, with singer Bobby "Blitz" Ellsworth and bassist D.D. Verni remaining from the original lineup. Along with Anthrax (whose one-time lead guitarist, Dan Spitz, was also an early member of Overkill), the band is one of the most successful East Coast thrash metal bands.