You'd expect this with aliens, doesn't matter the breed. Eventually when life wants a way in, it'll find it through the happy pregnant birthgiver to become -- be it a mother, or a father... yes indeed! Turns out it found a very unexpected candidate here through Marvin Martian~ It was his turn to bear the future additions of his kind, although... he seems rather mixed about the sudden role thrown on him. Angry? Pregnancy weight-strained? It's hard to say... yet still, despite the big bump, he's marching along without anything stopping him to plant the flag on a new little planet he landed on.

...or perhaps he's making it clear he just wants some personal time with his growing child in him without so many people pestering him and photobombing him... can't an expecting alien dad have a moment of peace!?