Calvin Edward Coleman (born 1975) was a Blaine County, California resident. Coleman worked as a farmer and was a registered Republican Party voter, and he attempted to beat down Slugs Piombino after he robbed Crescencio Cazares Mercado's store in 2018; Coleman, who was a customer at the store, attempted to take Piombino down as he left the register. However, Piombino knocked him out before fleeing.