Terrorcon Combiner Upgrade Abominus Upgrades: New feet, new chest plate, forearm, shoulder parts, new wings for Cutthroat, and Abominus gun. Hungrr heads for "knees".
Individual Figure Upgrades: New beast mode heads for Hungrrr (gray instead of red), new wings for Cutthroat (jet wings instead of dragon wings). No changes for others. Abominus parts can form (non-articulated) beast modes for Blot and Rippersnapper. Blot was the blind bag figure so does not come with the Abominus set at all.