From the Beetlejuice animated series, it's Lydia Deetz! I hadn't watched the original Beetlejuice until today (it's good!) but that rattled old memories of watching the animated show- which I didn't realise was succesful enough for multiple seasons- in my youth with no knowledge of what it was based on. Did you know, animated Lydia has extremely good and cool fashion sense? So that's how we got here, with a background vaguely based on part of the first intro for the show.
