This is a vintage Playmates “Dirtbag” action figure from the Teenage Mutant Ninja Turtles toy line, released in 1991. The character is a militant mutant mole who first appeared in the original cartoon series. Dirtbag is sold complete with all his accessories, which include a jackhammer gun, a chisel knife (not in the picture but included), and a four-pointed pick. In the cartoon, Dirtbag is a henchman of Shredder and is typically paired with the character Groundchuck.