Nearly every character in Sketchy Business just has so many individual details that I struggle to remember them all every time I draw them (like Chili's under eye mole that I forgot to draw for like two or three completed strips TT, and his sharp-toothed smile)
The hardest part of Chili's design to draw is his funky eyebrows. I like them. I think they make him really unique and visually distinct, but boy are they hard to draw lol.