Board Thread:General Discussion/@comment-27907368-20160323193924/@comment-34518800-20160711184127

Headcanononononononononononononononon:

Grillby's "good job" phrase at the end of the True Pacifist Route, he had spoke to everyone who deserved it. In truth, the Delta Rune means "good job". He's just the only one who realised it.

In the Genocide Route, Flowey realises this too, as you become the Angel of Death.