Model's scale: 39 meter length and 35 meter height.
Already basic rigged (kaiju_creature-rigged-packed.blend and other animated .blend files) and has animations like the preview video.
The rigged armature needs Wiggle Bone add-ons for the jiggle effect of bones (You can download it free here: https://blender-addons.org/wiggle-bones-addon/ and it would be great if you donate to them) You need to install the add-on before open the animated Blender file.