Fillbert The Empty Space Cat

2021-W21: introducing fillbert

{Fillbert, a white spherical cat with a black tail, waves.}Vivi {offscreen}: This is Fillbert.Fillbert: Hello!{Fillbert stops waving.}Vivi: Fillbert is a cat I doodled in high school.Fillbert: nya!{Fillbert expands to fill the entire panel.}Vivi: Fillbert fills empty space.SFX: *poomf*Fillbert: Behold!

Commentary

Welcome to Fillbert! (yes, filling empty space is a pun.)
This is the commentary where supplementary info to the comic will go, if it exists.