Nationwide there have been nearly 3000 searches for the super villain in the past seven days, making it the second most searched for costume onsite, and the most sought after costume in the Wellington region.
"Some Kiwis like to be on trend with their Halloween outfits," Silvester said.
"In previous years superheroes and villains like Pennywise, Batman and Spiderman have been very popular when the films have been out and about."
Pirates, witches and Harry Potter costumes are also among the top five most popular costumes, each fetching around 2000 searches last week.
The second most searched costume for Wellington is "superheroes".
Aucklanders can also expect to see a few superheroes knocking on their doors, as well as plenty of 80s-themed trick or treaters.
In Canterbury superhero and princess costumes topped the list.