Board Thread:General Discussion/@comment-28974149-20181004020542/@comment-32182236-20181008140829

"By the way, most of the seemingly unused text/files are used. If you can find the in-game context for an asset, you can show it off. But if you can't, it probably means you haven't looked hard enough. Anything truly unused I'll probably post myself, later."-Toby Fox

Now, has Toby posted about this Gaster? And yes, he kept his word, he posted all about the unused "star" theme, "Dogtroid", etc..

..The Gaster Followers can be reached by legitimate means. Not only that, it was impossible to do so in the original game without hacking, a patch made it possible to find them legitimately, meaning that there is simply no way this is just cut beta content.