The sans of topic. Basically, anything can be posted in the Undertale stream, even if the original content is not Undertale related. As long as it at least has a picture inside it or text related to Undertale, it will be approved, which is why I told you to add Sans to the Goku image. Sans is just the go-to for being on-topic, but really anything Undertale/Deltarune related would work
