Wack Jackie is an actress who was hired for Stan and Princess' wedding. When she heard of it, she thought it was good "crazy" wedding for her show, which she will fund everything.
Avery and Chloe were watching a video of Wacky Jackie performing various silly stunts on her webshow. She makes an entrance to the house telling everybody to "freak out". Avery then begins to question her sense of humor, thinking she only did it on the internet.
Later, Wacky Jackie is at the wedding with half of the crowd dressed formally (at Avery's request) and the other half like dolls (at Chloe's request).
- According to Karl, her real name is Jacqueline.
- She often pretends to be lots of different people, such as Sidekick Jackie, Doctor Jackie, Bull Jackie, and Uncle Jackie.
- She also created Clown Jackie because she met a clown name Gary Picklefish, who's gonna mentor her.
- She funded Stan and Princess' wedding.
- Karl seems to took an interest because he knows about her, both of them like action figures mint in package, and was shown envy when Jackie being around a clown.
- Avery, Chloe, Ellen, and Karl are fans of her.