[Oh Napstablook is watching. It was kind if like seeing a live show - even if they hadn't got a chance to do too many of those with Mettaton and Shyren yet. The battle is over right as Mettaton delivers his final line - after all, a high level Goodra is going to crush that tiny Grimer.

The Grimer slips into a puddle of itself as it faints, and the Team Skull calls back his Pokémon with a panicked look.

"J-just you wait, w-we won't forget this!"

And he takes off running, presumably to find another member of Team Skull about what happened. Napstablook slowly slides out from behind Mettaton once the dust from his Pokémon battle settles.]

"mettaton... that was so cool..."

It sounds unenthusiastic, but coming from Blooky? They're being sincere. A look of relief is spreading across their face, along with a smile.