Inspired by the original G1 Octopunch Pretender comes this upgrade set for the 2012 Botcon exclusive Shattered Glass Octopunch figure. There is a replacement head, four sets of tentacles, parts to make a trident out of the missiles and exclusive gun nozzles (based upon his G1 weapon) that will only be available in the complete set.
You need to remove Octopunch's faceplate (unscrew the head screw) which will then allow you to slip on the new head. Screw the screw back in and you are set. When transforming there is a somewhat tight fit with the shoulder covers that cover the head in vehicle mode.