Panel 1:
Tile and Mr. Mapleleaf look around at the growing black blob. It has expanded from the box Fizzles stands on and completely surrounds them.
Caption: No, this doesn't seem right.

Panel 2:
Tile lifts her leg out of the blobby mass she now stands in, and it stretches up, sticking to her foot.
Caption: It's very gooey.

Panel 3:
Fizzles stands on the box with the black goo creeping up the side. She does not appear as normal though, and the segments of her body and attire are drawn in dull blue lines, except for her shoes. The bubbles which normally float at her shoulders are absent.
Caption: And Fizzles has turned to glass.