In this modern age of filmmaking, most productions using animals in films will find a way to ensure the safety of the animals. In a movie about a cocaine-fueled bear on a rampage through the forest, the production could only use CGI bear (obviously).

While computer-generated imagery (CGI) technology has improved greatly in recent years, it can still be difficult to create realistic-looking animals in movies. From the complexity of animal anatomy to movement and behavior to the treacherous uncanny valley, creating a CGI animal that looks photorealistic is a massive challenge that director Elizabeth Banks asked the Oscar-nominated Wētā FX to overcome.

This wasn’t a problem for the team. The company that did most of the VFX on James Cameron’s Avatarfilms is no stranger to creating animated creatures (Gollum, Kong, and creatures on Pandora, and Caesar).

Banks had two requirements when it came to designing the bear for Cocaine Bear: the bear can’t be an inherent killing machine, and she had to look photoreal.

In an interview with IndieWire, Wētā VFX supervisor Robin Hollander said, “The initial brief from Liz on the first call was that the subtlety had to come through. Here’s a story of a mother protecting her cubs, and she’s just fallen victim to the war on drugs if you will. She’s not inherently bad. But there’s no point in doing this if she’s not photoreal.” 

How did the Wētā FX team achieve this?

Let’s get into the bloody details.

Creating a Photorealistic Bear

The challenge for the FX team was achieving the balance between a funny and ferocious mother bear. Since it's difficult to get quadrupeds (animals that have four feet) on motion capture stages, the bear had to be completely keyframe-animated.

Explaining the VFX process to the director early on was important for Hollander because it allows them to understand what they should expect from the evolving CG model. A photorealistic bear wouldn’t come into existence right away. Instead, it would take a lot of time building the bear, named Cokie, into the shot once the footage came in.

“It was establishing her expectations so she didn’t freak out or worry that her initial brief wasn’t being met,” Hollander said. “I think she learned a lot about the visual effects process and that really helped build trust.”

How the bear from 'Cocaine Bear' was createdCokie, the bear from 'Cocaine Bear'Credit: Courtesy of Wētā FX/Universal Pictures

The producers of Cocaine Bear, Phil Lord and Chris Miller, didn’t show any of their anxieties during the animation process. Although they didn’t provide any animation notes, Miller did emphasize in an early production call that Cokie looked coked-out of her brain, but not goofy. Cokie looked lifelike.

“We pitched different animalistic behaviors and the one we referenced often was the sun bear,” Hollander noted. “Because they just look a bit cooked. Their eyes are all over the place, their tongue is really lopsided. They’re quite ferocious when they get into a coconut. That seemed like really fun behavior that we could model the cocaine addiction on, like what would a real bear do?”

As the FX team created the digital bear, Banks wanted the cast and crew to work with a bear performer on set. Allan Henry, who studied mo-cap with Andy Serkis on Planet of the Apes, worked as the performance bear for Cocaine Bear, donning costumes and prosthetics made by Wētā Workshop. The costume and prosthetics included a black lycra foam suit and helmet. 

How the bear from 'Cocaine Bear' was created'Cocaine Bear'Credit: Courtesy of Wētā FX/Universal Pictures

Having a bear performer on set helped the Wētā FX when it came to lighting. Unfortunately, natural lighting doesn’t always illuminate dark liquids like blood on black fur. To bring out the blood in Cokie’s fur, they utilized helper lights. For the many close-ups of the bear, adjustments had to be made to improve the animation of the facial fur, adjusting from half a million strands of hair to roughly four million, and adding a meniscus layer to the eyes to help capture the bear’s wide range of emotions on her drug-fueled trip.

The challenge for the team came when compositing the bear into complex scenes with a lot of design elements.

“My background is as a compositor,” Hollander said, “so putting things in a scene that has a lot of twigs, branches, bushes, shrugs is really tricky. Then there’s the mauling at the end. We had Allan drag the actress [Hannah Hoekstra] through the bush, which meant we had stunt pads that we had to remove. We had to create roto mats for all the bushes and whatnot; we had to remove Allan and we had to add Cokie back in. Actually, it was a very challenging sequence for integrating her.”

How the bear from 'Cocaine Bear' was created'Cocaine Bear'Credit: Courtesy of Wētā FX/Universal Pictures

Is Cokie the Best CGI Bear in Film and TV?

Cokie isn’t the first photorealistic CGI bear to appear on the silver screen. That honor goes to The Revenant bear, which had Andy Serkis in a blue suit behaving and attacking Leonardo DiCaprio like a bear.

The bear from The Revenant, which was created by Industrial Light & Magic (ILM),became the source material for Wētā FX design. Unfortunately, the exact design of the bear wouldn’t work for Cocaine Bear since Cokie wouldn’t be used for shock value and would be seen on screen for a majority of the film’s runtime.

Comparing the bears from 'Cocaine Bear' and 'The Revenant''The Revenant'Credit: 20th Century Fox

The team had to create a bear that was far more anatomically complex. The Revenant bear’s hind legs are bent, which isn’t anatomically correct and would bring the creature into the uncanny valley if the viewers were to notice it. Cokie’s hind legs were straightened out, which benefited her movement when she chased down those she found threatening.

There are times when watching the movie that the bear doesn’t look real, but it could be a part of our brains that knows when something is and isn’t real. That being said, the bear does look great when compared to other CGI creatures in recent films and TV shows. To create a realistic-looking creature, have the animal interact with the settings and show its real impact on the world around it.

CGI animals are looking more and more photorealistic. While the technology isn’t there yet, deep research into anatomically correct modeling will improve and bring us closer as the tech improves.

What did you think of the bear’s appearance in Cocaine Bear? Do you think Cokie looks more real than the bear from The Revenant?

Let us know your thoughts in the comments!

Source: IndieWire