Asami Sato was one of the better characters on The Legend of Korra who wasn’t a bender themselves.
She starts in the first season almost as a thorn in Korra’s side. She first starts to date the guy she likes, and then her father is actually an evil guy who is secretly funding Amon. But when it comes time to do the right thing, she joins the side of good.
After season 1, she and Korra get a lot more friendly.
Most of my memory of her during the later seasons is a bit blurry. I do remember her trying to piece together the remains of her father’s company while he was in prison.
At the end of the series she and Korra agreed to venture into the spirit world together. Nickelodeon cut out the part where they kiss as they were actually a romantic couple at the very end which was confirmed by the showrunners and they continued in the comic books they made afterwards.