The real question is why does Kate keep having one version of herself walk out of the shower mid sex? What could possibly be that important that you have to take care of it during an orgasm?

In the comics he actually gets something like this, might happen in the show pretty soon. Won’t be too specific bc spoilers.

Let’s just say we get to see how Viltrumites think about other species later on in the show. That said, they never have babies with any aliens that can’t communicate so it isn’t actually like a pet relationship, Omniman was just teetering on the edge of seeing his family as subhuman (subviltrum?) and that was the analogy to explain it to mark.