pixellated-flutterflies replied to your post “Have you seen the evidence going around that Papyrus knows a lot more...”
Not really sure why Flowey would know about Mettaton Ex, or how he would know Asgore would trim a hedge in the shape of Papyrus' face, or how that explains Papyrus making numerous references about looking through the telephone (calling Papyrus in his room, the steam vent puzzle in Hotlands and the dog food bag call on Alphys' lab), but there isn't a lot of other explanations for it
Flowey has likely been in and out of Alphys’ lab, considering the evidence from the pacifist route. It’s very possible that he found the designs for Mettaton Ex and shared what he learned with Papyrus. Perhaps in some of his runs, Alphys even finished creating Mettaton Ex’s body.
Asgore trimming a hedge in the shape of Papyrus’ face is a rather flimsy example of prediction. It is more likely that someone asked Asgore for the favor, considering it was part of Papyrus’ dream when becoming a Royal Guard. Since he no longer can be a Royal Guardsman, the hedge may be the next best thing.
When calling Papyrus in his room, it’s likely that Frisk told him they are still in his room.
Although there isn’t any written dialogue from Frisk, Toriel confirms that Frisk speaks during the phone calls.
As mentioned in the previous post, Papyrus has a habit of leaning on the fourth wall. Furthermore, he isn’t always consistent in what he says. He implies that he can see the room in one call.
Yet earlier, he says he can’t see Frisk because they’re “on the phone.”
