Blooky is already a ghost, and even if I apologized to this one, what sort of absolution would it lead to anyway?

...It's not him. It can't speak! And it cannot change anything!!

[Mettaton gives a loud sigh of frustration, before letting out an aggravated huff into his long bangs, causing them to flutter. It's childish. This is actually just an exercise in childishness.

To escalate the childishness, he decides to change the subject.]

At any rate, how are you so sure about all this? Do you have past experience? I mean, I can see that you're currently being haunted, but this all sounds like something out of a human horror movie, and those are all fictional, aren't they?

[A former monster. And he's calling the supernatural into question.]