So you want to pull off a Sulley costume in all its lovable monstrousness? Well, you’ve come to the right place because we’ve got just the Guide to help you!
First, you need to know the guy for convincing cosplay. James P. “Sulley” Sullivan is one of the memorable protagonists of the Monsters, Inc. franchise.
He was initially the Top Scarer at Monsters, Inc. But after it changed to collecting laughs instead, he replaced Henry J. Waternoose III as the company’s CEO.
Mike Wazowski is his best friend and roommate, whom he met while attending Monsters University. Though they started on a rough note, they soon became lifelong best friends.
He was voiced by the talented John Goodman, who brings out a genuinely lovable monster. So let’s see how you can do him justice!

You’ll Need:
DIY Sulley Costume Guide
Let’s do this step by step, so follow our Sulley Costume Guide to the letter, and you’ll be amazed at the results!
Get started with the most significant piece of the puzzle: a full-sulley jumpsuit. This Hooded Onesie gets its iconic color and spotted pattern from head to ankle.
Next, get a pair of Sulley Paw Gloves to cover your hands and a couple of Sulley Paw Claw Shoes to protect your feet. The less skin shown through the gaps, the better!
This costume is very flexible among age groups. So you can procure the Kids Version for toddlers quite easily in the form of a One-piece Costume.
If you’re looking for a less humanoid Cosplay, then a separate adult Version exists for a more accurate portrayal. So secure an Adult Sulley Inflatable Costume at your convenience.
Sulley Makeup Tutorial | Halloween Costume Ideas
Sulley Cosplay Costume
Over time, Sulley has become an Animated Monster icon. His big build and fluffy coat are easily recognizable by fans everywhere.
So if you will cosplay this character, you better practice his expression and posture! Cosplay is about portraying the surface, but you can always put your unique spin on it.
So embrace your inner Monster and blow everyone away with this Sulley costume. Luckily for you, it is a simple cosplay that can finish in no time.
On that note, I recommend pulling off a Monsters, Inc. Group Cosplay! Get your friends to dress up alongside you as Mike Wazowski, Randall Boggs, Boo, and Henry J. Waternoose III to crash any party monstrously!
About Sulley from Monsters, Inc.
From the onset, Sulley shows to be a natural at Scaring thanks to his enormous size, fierce roar, and family legacy of high-achieving Scarers. Even so, he learns to put his pride aside, team up with others, and work hard to yield results.
He is a friendly, outgoing, brave, intelligent, selfless, humble, even-tempered, confident, and caring monster. What’s more, he retains his popularity among his peers.
Despite his job demanding otherwise, Sulley tries to befriend the child Boo and goes to extremes to protect her from Randall and Waternoose. By realizing the power of children’s laughter, he even solves Monstropolis’ energy crisis.
Another key trait is his loyalty to Mike Wazowski, giving his all to support his friend in multiple endeavors. The two work well together to accomplish what might’ve been impossible and bring positive change to their world.
What is the most famous quote from Sulley?
1. “The Team Of Wazowski And Sullivan Are Going To Change The World Starting Today.”
2. “Mike, I Don’t Know A Single Scarer Who Can Do What You Do.”
3. “You Think I Could Have Done That Without You?”
4. “You’re The Great Mike Wazowski. You’ll Come Up With Something.”