This was my character in our Mutant tabletop RPG campaign. He was a scientist with only slight mutations, he for example did not sleep at all and he had vibration sensitive growths under his feet, so he could sense vibrations from things moving close by.
He was very often found in the shadow under our modified monster truck, bare feet in the snow and energy rifle in hand waiting for anyone unwise enough to try and ambush us while we “slept”.
I actually survived through the whole campaign with this character, and it was a lot of fun as I was the only one with high skills in technology and science, so I was always my fault when I managed to trigger some ancient robot defense system while tampering with some door console or such. 🙂