I had seen another flexi godzilla, but I wanted a Legendary version of it, so I got to it.
The one I printed was actually scaled down to almost half the original size, but if you want to go big, more power to ya (Please do, I Would like to see ;))
There is only one side for a leg and arm, but you can multiply that by 1 in Cura and then mirror it so it will be an inverse of the original model, that way you have two arms and legs
The pin is optional, I put it on mine since it allows for the arms and legs to move freely
I based the model off of the NECA toy