Board Thread:General Discussion/@comment-27905483-20160303005710/@comment-27907368-20160303093135

I believe Chara is called upon by the player if they kill and gather stats. When running through the neutral route, I do not believe that Chara is mentioned, other than perhaps by Flowey who mistakes you for one another. I think that Flowey is part of what makes the story of Undertale so confusing at times. He throws some really weird lines into the mix that we have to take as canon even though he is a manipulative, stalky son-of-a-gun.

In pacifist mode, you are declared Frisk. No Chara mentioned at all, given you have completed a neutral run.

On the contrary, though - we are met with Asgore's voiceclip to Chara when we die. We hear this same voiceclip when we go back to Toriel's house to sleep. Perhaps souls past can contact us between realities? Even when sans is asleep, the z's are in (G)Aster font. Maybe he's being contacted by Gaster's spirit? I dunno. A few characters also reach into the save screen to talk to you, so I'm not convinced that it isn't more than a method to convey flavor. Flowey and sans also reach through the save - wait. sans reaches through the save screen. Never thought of that. Huh.

Memories of Chara remain if you do not call to her. Moreso, she may very well be connected to your heart because of sharing determination. Kind of like, there will always be a shard of Chara in every determined human's soul.

I'm also not convinced that the other humans could manipulate time because their souls get caught and they don't reset.