Board Thread:Monster Discussions/@comment-32864640-20131101175903/@comment-24435322-20140611215211

I have only fully watched five or six of the Godzilla films (including the one that came out this year), but the article on Godzilla says that his regenerative capabilities is due to the the Regenerator G-1 genes. Maybe this is something most, if not all, kaiju featured in the franchise share, and these genes help their cells recover from any damage inflicted by radiation (since it is detrimental to living tissue) as well as physical injury, explaining how there are no serious morphological defects observed among them. They could have also evolved mechanisms to either utilize the energy emitted by radioactive decay for biological processes, expelling it when it builds up, or other purposes to cope with radiation. These are just theories though.