Btw I found the source of that sadpanda art earlier. I just went to the Trickcal arca page and searched for "uk" in the writer field. It did spit out all results that included "uk", but thankfully it didn't take too long to find the guy.
https://arca.live/u/@UK/82433430

Also here's an extra drawing not included in the shown links on that page.
https://arca.live/b/trickcal/146907819