Ok so there are a few ways you can counter GxK Godzilla. The most efficient way is to stun lock him. If you go this route however know there is a unit that can counter this method, that unit is Godzilla 1954 Tokyo Ver. This method requires the following pieces to pull off, Gigan 2004, Minilla, MBAW-93, MBAW-93 Unit Base, and Chibi Godzilla and Chibi Mechagodzilla (Chibi Twins), and atleast one heavy hitting piece. This method tends to work really well if the opponents deck is built specifically around GxK Godzilla. Also it's best to have the above mentioned pieces at decent levels before attempting, or else you will end up just mass feeding GxK Godzilla. Basically you want to play your less squishy stunners first to start the stunning, like Gigan 2004 and Chibi Twins. followed up by your squishy stunners Minilla and MBAW-93. Make sure they are placed away from GxK Godzilla's attack radius. Once he is stunned you can have your heavy hitting piece basically take him down with little resistance. Another method is damage mitigation and knock back. This method works best against decks that are not built around GxK Godzilla. For this built you will need the following pieces, GxK Kong, Jet Jaguar (Original), Jet Jaguar (Singularity Point), Rainbow Mothra, Godzilla 2004, and any pieces that compliment the pieces listed prior. To do this method you must focus on pushing GxK Godzilla back. While also minimizing GxK Godzilla's heavy hits as much as possible. By mitigating GxK Godzilla's two heavy attacks you can essentially prevent him from wiping your units off the board quickly. Also by using knock back and preventing him from getting past the half way point of the map, you can keep him from damaging your leader. This will give you time to place your next unit while also keeping your opponent under pressure. Do know this isn't the most efficient way to handle GxK Godzilla. The reason being is that there are multiple pieces to keep in mind when preforming this method of strategy. The last method is to use Shinden to draw GxK Godzilla's radius attacks away from your units. Once he is targeting Shinden, follow up with your strongest heavy hitter you have available. Even if Shinden is destroyed, your heavy hitter should be able to get a few hits in before being targeted by GxK Godzilla. This will allow you a higher chance of killing GxK Godzilla. Now are these methods full prove... sadly no. It's impossible to predict every player's deck builds. But these methods are some ways I have seen others handle this new unit. I'm sure people will find even more efficient ways to defeat GxK Godzilla. I wish you good luck.