She's not evil, Mo. She's just angry and trying to punish the world for everything it did to her.
Thomas Rainwater
Angela Blue Thunder is a business consultant hired by Thomas Rainwater to fend off Market Equities who are not only a threat to Yellowstone Dutton Ranch, but to Broken Rock Reservation. Though she reluctantly agrees to help Rainwater, her agenda on the other hand is unclear. After her absence in Season 4, she reemerged in Season 5.