Board Thread:General Discussion/@comment-27907368-20160323193924/@comment-26887879-20160506152025

I hc Chara as a very resevred person who didn't like to go into details about themselves even to close ones, but since them and Asriel became close like siblings, he got the best glimpse of Chara's true personallity. They were the most comfortable with being themselves in Asriel's presence...

Undyne doesn't drink or smoke. She is heavy believer in healthy lifestyle. Alphys does smoke sometimes, but likes hiding that fact from Undyne...

If you tell Undyne that Anime is real, after True Pacifist ending, she will go up to random high school students on the surface and congratulate them for keeping the world a safe place.