BUT WHAT IF

That’s impossible how does sans not know you how does asriel go to college when it sounds like he’s only a kid in undertale how does fish and Dino no know each other (lol) METTATON IS A NOBODY HERE and most important thing here that makes this bogus is that nobody ever mentions kris/frisk as the ambassador of monsters even though they become the ambassador in the end of true pacifist

What if it's a different timeline?

That is actually possible as crazy as it sounds though

no