When it comes to costume parties, the range of themes is intense. Few though, offer as unique an opportunity as the one presented by the Minneapolis Bouldering Project on Halloween night. Partiers faced only one requirement when attending this ghoulish shindig — to climb.

From the ever-obvious gorilla suits to some we-don’t-know-what costumes, Halloween night in the Boom Island climbing gym was a true treat. With Pikachus leaping across the walls and fairies floating to the top of routes, A&E decided to swing in and find the best climbing costumes of the night. 

Natasha Cramer, Avatar 

When you think of species that climb, it’s doubtful that the Na’vi from 2009 blockbuster “Avatar” come to mind. This is why it’s a genius bouldering ‘fit. What better way to climb the turquoise blue walls of the bouldering project than doing it as a Pandora native? This take on what it means to be a “tree-hugger” was not only clever, but also perfectly executed.

“My hair is long already, so I just braided it and got the suit online. It all worked out,” Cramer said. 

Swinging from hold-to-hold with extraterrestrial ease, Cramer’s costume was out of this world.

Chris Falk, Viking

Sound the horns of the North for this one. It’s not every day you see a Nordic warrior scaling walls.

Acting more like a ninja, Falk’s costume was on-point for a Minnesotan climbing gym. Looking like an extra from “Game of Thrones,” this Viking climbed with ferocious tenacity, making anyone at the top of the route sure to hop out of the way. The only downside? A packed indoor gym.

“Yeah, I’m realizing this may not have been the best choice, it’s getting really freaking hot,” Falk said. “A little awkward, too.”

Regardless, this costume was realistic. *Queue Viking football horn;* Ragnar would be proud.

Daniel Trinh, Will Hanson and Kip, Circus performers

Only at a bouldering gym will you find a dog — by which we mean lion  — hanging out on the mats watching crushers do their thing.

This trio flew above and beyond with their dedication to the group costume. As Trinh the clown amused those resting below as he sent the route, Hanson and his not-so-savage beast Kip trained below. Despite a belly rub to warm up the core and an ear scratch to get ready for those tiny crimp holds, this was one intense workout for the traveling performers. 

“This is just such a fun event, we knew everyone was going to look goofy,” Trinh said. “That what’s it’s all about, plus this is easy to climb in.”

Hillary Waters, Trad climber

If you’re a climber, you’re laughing at this one. For those who don’t get it, bouldering uses no equipment other than shoes and chalk. Trad climbing (arguably the absolute opposite of bouldering) uses carabiners, ropes, helmets, a harness and more to get up a big, real rock wall.

Hilarious overkill for a bouldering gym, this costume cleverly plays on climbing culture and its nuances.

“I’m a trad climber lost in a bouldering gym,” Waters said. “There’s a little competition between the two types of climbers, each group thinks they’re the best.”