Board Thread:General Discussion/@comment-36432399-20181028013241/@comment-31593032-20181028015630

Asgore just nodding at you saying you've died before could just be because of in-universe reasons. If the other fallen children can SAVE and LOAD and told him this same thing, he wouldn't be surprised anymore. (fallen humans theory)

Mettaton saying his words are bombs could be treated as a little joke and let go of, like characters telling you to press certain buttons, but WHO DO YOU THINK WE ARE so we have to theorize on it. Dialogue could appear for them. They might have speech bubbles or boxes. They might not even have this, and Mettaton made words appear in front of him with ghost or robot powers. He and Napstablook are the only characters able to spell out words as attacks, "NOT FEELING UP TO IT RIGHT NOW, SORRY" and "HAPPY BREAKTIME". They're both ghosts so this could be one of their abilities.

"You're gonna die a lot". This is probably an exaggeration from Mettaton, but now that I think about it... If you die to Mettaton's fight in the CORE, you can turn him around early. He doesn't question this and just responds "CLEVER. VERY CLEVER." and gets into the fight. Makes you wonder a bit.

Either way, I don't think they knew about the game being, well, a game. Saving and loading is a game mechanic here and part of the world's story. If you don't know the details of it already, I won't spoil it for you, but there's an in-game reason for it that they could know about. If anyone knows their world's a game it would be Sans, but I'm not sure about that until we get further canon evidence.

Also Chara deals 999999+ damage to several characters so why should the player be any different really, they've only grown more powerful over the geno route. Interpret that as you will.