This has been in my mind since August but I couldn't figure out which character would say it. Then I started a Karlach Origin run and realized: Karlach. Karlach has a face that knows what The Grinch is.
no words for how much I adore these two characters and the ways their journeys parallel one another's... take this as part character study (what if they helped each other heal!) and part ship content (they were made for each other...) anyways. the shadowzel illness never stops