Board Thread:General Discussion/@comment-26006155-20190617222636/@comment-26006155-20190717014254

New Home isn’t just near The Core... it’s actually part of The Core. You have to travel through the Core’s facilities in order to get there.

Which means New Hone couldn’t have even been built before Gaster arrived.

He’s definitely a turning point in the story. And the catalyst for the monster’s change in attitude.