I've tried to draw an ant, young ant. That has an interesting story.
A young ant who has a normal life in the jungle. He's been a soldier of the army for one week.
One night, he sees a light in the sky, and then .....boooomb!
He was afraid but followed the light and he saw the enormous and strange thing.
He walked step by step with a gun in his hand. Out of the blue, a strange creature come out of that big thing. Yes, it was an "Alien" that ... .
Yup, this is a story in mind for designing this character. I hope you love it :-)