Board Thread:General Discussion/@comment-35615238-20190121141916/@comment-26006155-20190205122142

The Elevator Voice is specifially a voice Frisk has never heard before.

Flowey does have the ability to mimic voices. But they're always the voices of someone he's heard before. And Frisk can usually identify them.

But Frisk couldn't identify this one.

And the voice specially said "It's been a long time." When at most it was a few days between when Frisk first met Flowey and when Frisk went into the True Lab.

This is someone who remembers Frisk.. from the past.