In the new game high on life there is a small part where a guy talks about how he has been made pregnant many times after being taken by aliens and loves his little alien babies. Around 1:21
https://youtu.be/YD_NCYVNdQ0
I'm starting to think roiland has an mpreg fetish seening how much it crops up in his work
Morty was pregnant briefly in episode 7 of season 6 of Rick and Morty. The show also tends to put both Morty and Jerry in various reproductively vulnerable positions. I think the commenter above me is 100% correct.
Yes the Morty one kids disturbing as he's 14. I assume it Roland as Harmon has nothing to do with high on life.
I will say the amount of incest themes in recent series ain't great look