To unlock the following skins, fulfill the corresponding condition in the game:

    G1 Jazz - Complete all sub-missions (both campaigns)
    G1 Megatron - Acquire all Decepticon icons
    G1 Optimus Prime - Acquire all Autobot icons
    G1 Starscream - Finish the Decepticon campaign
    Robovision Optimus Prime - Finish the Autobot campaign