Beatrix LeBeau

Beatrix LeBeau is the protagonist of Slime Rancher. She is a female human being. She is the new owner of The Ranch, which was previously owned by Hobson Twillgers.

Casey
Casey is a human being that sends Bea Starmail throughout the course of the game. These go into detail about their interactions. In the Stairmails "A death hike" and "New Years Eve" show Beatrix has an outdoorsy personality.

In one of his early Starmail, it states that he "adopted" a cactus from a shop Bea had, which might mean that her shipped closed down based off of the contents.

Abilties
Bea has one way or interacting with the world, her VacPack. She can store up to 4 different items in it and shoot them out whenever she wants. She can spring for a short time, consuming the VacPack's energy reserves. She has a flashlight, a radar that points toward home, or the warp station if in The Glass Desert, and a Map.

The VacPack can be upgraded. It can have a Jetpack to fly for short periods of time, a water tank to fight against the Tarr better and with heart and energy modules to increase health and energy as well as tank boosters. Later on, she can get Treasure Crackers to unlock Treasure Pods.

Trivia

 * Beatrix's mouth is fake 2D, a face shader with negative depth values, making it look 2D from any angle.
 * In Casey's first Starmail to Bea, it showed she slept in a pod on her way to The Far, Far Range for a year. The  pod was sent by  the 7Zee Corporation