Here are my headcanons for the Native American Box! Links lead to my bios for them, with more detailed info and art:
Kiikaa the Thunderbird, kwami of Electricity. She rests in the Center of the Upper Box. Kiikaa has control over all things related to Electricity. This doesn't just mean shooting lighting, but also manipulating electronics and even mind control (as the nervous system uses electric signals).
Yanna the Bison, kwami of Victory. She rests in the North section of the Upper Box. Yanna's powers allow her holders to become stronger when winning, and to always claim their prizes for their Victory.
Remmi the Coyote, kwami of Despair. They rest in the East section of the Upper Box. Remmi's powers increase the Despair people feel in an area, and create beings known as Prowlers that protect and feed on sources of hope.
Liiri the Eagle, kwami of Freedom. They rest in the South section of the Upper Box. Like in canon Liiri's powers Free people from emotional and mental restrictions, though I have also given them the power to break Free of physical restraints too.
Vollee the Locust, kwami of Invasion. He rests in the West section of the Upper Box. Vollee's powers allow holders to create clones of themselves that attack in sync, and to appear behind a target to strike.
Drill the Woodpecker, kwami of Expansion. His power manipulate the amount of space something can hold.
Karrma the Goose, kwami of Justice. Her powers let one subject someone to what they've done to another.