Probable source: https://www.deviantart.com/hearte42/art/The-Emperor-357892316

It’s been posted all over the Internet but this is the oldest version I could find. There’s news articles about it too, such as: https://www.huffingtonpost.co.uk/2013/03/11/stars-wars-emperor-palpatine-babys-ultrasound-scan-picture_n_2852674.html

Seems so: https://wiki.c2.com/?KornShellStory

Yeah, it just shows that the artist 麵包 (https://www.pixiv.net/en/users/11500734) posted the original picture.

Someone on twitter posted the most likely source: https://www.pixiv.net/en/artworks/87271896#manga

It looks like this isn’t actually from the original show.