Here's a blow-up of the graphic they're using. Here's a good quality version of the image with thanks to Seppe.
Lots of people referring to this on social media as a collage. To me, it's pretty clear that it's all one image. They're in a low-lit room, the chap in the hat is creating shadows on a sheet. It's pretty straight forward... I think.
Now. K5 also list a voice cast for the film:
Jaden Betts as Hap
Pamela Adlon as Richard
Brendan Gleeson as Darce
Jeffrey Tambor as Cuzzie Bell
Catherine O'Hara as Miss Fern
And which of those are in the image above? I'd guess Hap and Richard and either Darce or Bell. Probably Bell, I'd guess as there needs to be a villain and that Darce sounds more like a villain's name to me.
But I'm just guessing. Hopefully K5 will work wonders, get backers at the EFM and one day soon, I won't have to guess about what I never got to see.