You get to add one character from another television or movie "universe" into Gilmore Girls. Who are you adding, and why?

Anything goes! You can drop in a reality star, a fictional character, even an animated character!

I'll start: I'm dropping in Ramona Singer (RHONY) as someone who regularly stayed at the Independence Inn and was an absolute nightmare as a guest. To everyone's horror, she began regularly staying at the Dragonfly. Michel begins to call in sick whenever he sees Ramona's name under upcoming reservations. Why am I doing this? Partly to torture Michel, and partly because Ramona is a chaos monster, so it would be fun to watch!