Board Thread:General Discussion/@comment-26006155-20190617222636/@comment-26006155-20190704031947

While the possibility that Chara stayed in the Ruins for a while before moving to New Hone exists, the question is when could Gaster have met Chara?

Gaster, and his laboratory in The Core, is on the other side of the monster world. And it’s directly connected to Asgore's Castle in New Home by an elevator.

The important detail is that Gaster either performed his DE Extraction experiments—-or had pre-knowledge of how to use Determination—before he met Chara in the Beta Timeline.

Which means Gaster either is a human himself, or had access to another human, before he had access to Chara or any of the Six Humans who followed her.

Which means we have at least one hidden human to find.