Board Thread:General Discussion/@comment-26006155-20190425222457/@comment-26006155-20190611112330

Well, that picture is named "him.png", and is clearly a link to Gaster.

The music that plays in Deltarune during character creation is "Another Him".

And Asriel's theme (we think?) is titled "His Theme".

... I'd say this backs up my theories that Asriel and Gaster are linked somehow. Gaster's voice was talking out of Hyperdeath Asriel's mouth.

Toby did say Deltarune was his first idea. He's clearly planned this well in advance.