Board Thread:General Discussion/@comment-26006155-20190820122909/@comment-26006155-20190825130357

Jacky720 wrote: The monsters migrated to New Home because Chara removed their fear of humans so that they could spread out to occupy the rest of the Underground. While I'm not saying Gaster arrived after Chara, I am saying the CORE was built after them. Chara.. removed their fear of humans? How?

The Core was built before Chara arrived, New Home was finished by The End of 201X, when Asriel brought Chara there after finding her. By the time Chara arrived, the migration to New Home was already finished.