Board Thread:General Discussion/@comment-4504826-20160426040035/@comment-27907368-20160427014916

sans interrupts his battle intro when you're mashing the "z" key - imagine the protagonist glaring at him with a "GET ON WITH IT!" face. I'd jumpstart my attack, too.

He comments that we look bored for his judgements, which is why we give him more information. He also requires us to deliver him a secret and a secret secret codeword to get a key to his room.

He doesn't outright remember anything. He reads our face. He's ridiculously good at it in genocide, but hey. There is no hint that he recalls every SAVE and reset.

Moreso, all characters exhibit changed dialogue with resets (so long as they aren't true resets). PAPYRUS will say that he remembers us if we load our SAVE a second after meeting him by the rock. Undyne will say that she feels like we were once a friend.

So... yeah. He doesn't remember all resets or SAVEs or whatever it is that person was trying to say. He tells us he reads our face and he reads it well.