Wow Dodge, I particularly love the different missiles and cannon that you gave to the CAT. These guys look just as awesome next to their vehicle.
As for Shiver I like how you gave him removable goggles and that you see the eyes. Ever considered giving him a head that you can swap for to reveal his face and hairdo to match his look just before Shiver ended up in a prison cell?
As for the boots, I just find that he is missing the black paint sheme on his lower legs, that kind of counterweights with the rest of the black already present on his top uniform. But I can understand that this is an update, so rest assured, it's pointers that you can choose to ignore. But you can always break the ice by painting the pants completely black as well. Since his white coat goes below the waist, this should work without a problem.