More explanation: So in TUP, the Anti-Timeline was sealed away after Sketchy escaped from it. In Shadow and Light, Universal was sealed away in the same relm the Anti-Timeline was sealed away in. the special pot in TUP EP 4 is the pot that holds everything sealed away, and when it breaks it releases everything. The Inkblots are still sealed away, and they inhabit the Anti-Timeline, so when the pot breaks releasing the Anti-Timeline, everything from it releasing into the main timeline is shadows, but Universal can find a way around that as he isn't a shadow in EP 5.
it's kinda complicated...