Hello :)

That I believe would be Patty. Patty is a special character, who is currently only available for purchase in the special, limited-time Halloween Promo Pack. We are aware that some users aren't being offered this pack on accident however, in case you're not seeing it.

Do also note, that Patty isn't required to play this scene! She does make it a bit easier however :) With 4 or less characters on the scene, there is a chance (which grows as less characters are used) that the scene will not complete successfully, and you'll have to try again. With Patty and the four others, I believe this scene's chance of success is raised to 100%, so you should only need to do it once, if you have Patty.