they are based on mantises right?
mantises literally have 12+ month lifespans, and since they have biological organs to support a larger size like a skeleton, extra muscles, lungs and heart, etc, that would also greatly boost their lifespan to that of a human more, coupled with them also living on a non hostile environment as well making it easier to live beyond than expectations [well before the viltrumites arrive and turn them into sex slaves]
and plus they are an interstellar race or semi because they have vehicles that can travel to earth within a week or less, wouldnt that mean they would also have the technology to also boost their lifespans to?
This show has a guy made out of magma
and water laced with chemicals that can affect eyesight with different frequencies of light which only Americans deal with due to drinking tap water
[which wasn’t totally inspired off of true events the CIA did a few decades back]