Dava Cassamam was a deep cloud-miner who enjoyed a good game of sabacc in Solo: A Star Wars Story.
In addition to Solo Dava appeared in the books Solo: A Star Wars Story: Han on the Run and Solo: A Star Wars Story: Meet the Crew. You can also spot Dava in issue #3 of the Solo comic adaptation and issue #5 of Lando – Double of Nothing.
Concept designer Lunt Davies said this about Dava in the book The Art of Solo: A Star Wars Story:
I’ve always liked the idea of a creature having to wear their own life-support system, with a visibly different color gas or liquid within the glass bubble of their helmet. She started as a he, and I saw her as a powerful warlord or smuggler boss.