Copperhead (version 8) was released with the Sting Raider in the first wave of Toys R Us exclusive vehicles in 2010. The package also included Swamp-Viper (v2).
Copperhead (version 8) was created using the torso, waist, and arms of Roadblock (v16) (2007), the head and legs of Copperhead (v4) (2008), and the hands of Copperhead (v5) (2009).