Having mastered water, earth and fire, Avatar Korra is eager to begin her training in airbending, but trouble in Republic City interrupts her plans. She has a Polar Bear Dog named Naga. Mastering 3 out of 4 elements-- though she is struggling to learn Airbending. Having been born in the southern water tribe, She is new to republic city. She snuck out of the Southern water tribe in search of Tenzin, her air bending master. She was trained all her life by the white lotus. Korra is Hardheaded, bold, impulsive, stubborn, and confident, though she tries to do the right thing, yet slightly naive. She became a pro bender and joined the Fire Ferrets, teaming up with Mako and Bolin.

Born in Republic City to an Earth Kingdom father and Fire Nation mother, he and his older brother, Mako, lived on the streets after their parents were killed. They were discovered by Toza and grew up around the Pro-bending Arena. He is an earthbender, pro-bender for the Fire Ferrets, and a member of the new Team Avatar. He is fiercely attached to his fire ferret companion, Pabu; Naive and Trusting; playful, loyal, and has an easygoing nature. He is painfully oblivious.

Mako was a firebender and lighting bender from a multicultural family who grew up on the streets of Republic City as an orphan with his younger brother, Bolin. Mako always wore his signature red scarf that was once his father's, who was murdered along with his mother when he was a boy. They were discovered by Toza and grew up around the Pro-bending Arena. He joined team avatar, alongside his brother Bolin, to help Korra fight the equalists.

Asami Sato was a businesswoman, industrialist, engineer, and the only child of the former wealthy industrialist Hiroshi Sato and his late wife, Yasuko Sato, an architect. This happens later on: Although a nonbender, when she discovered that her father was working with the Equalists, she rejected his hatred of benders and actively fought against the Equalists as a member of Team Avatar. Though she is unaware at first.

Being the Main antagonist, Amon is a waterbender from the Northern Water Tribe and the oldest son of the notorious Republic City crime boss, Yakone. His true name is Noatak though this will not be revealed, and is able to use Bloodbending outside of the full moon to remove the bending of others. He is the elder brother of Councilman Tarrlok. He is the leader of the equalist movement, a violent, anti-bender, movement. Eventually he will lead an attack on the city.

Tenzin was an airbending master, monk, and the youngest child of Avatar Aang and Chief Katara. He lived on Air Temple Island with the Air Acolytes, his wife Pema, and their four children: Jinora, Ikki, Meelo, and Rohan. He is the airbending mentor of Avatar Korra and tries his best to teach Korra the ways of airbending. Despite being a monk, he is rather short tempered, though he tries to be patient. He has a family of 5. Pema, a non bending air Acolyte and his pregnant wife of; Jinora, Tenzins eldest daughter and airbending prodigy; Ikki, Tenzin's second daughter, she is lively and outgoing; Meelo, the third youngest and the son of Tenzin, he is an energetic and mischievous Airbender. His newborn son named Rohan will only appear after the equalist attack on republic city.

Tarrlok was the last representative for the Northern Water Tribe on the United Republic Council and also served as its chairman. He was an ambitious politician, considered fair-minded and likable by the general public; however, behind closed doors, he was a manipulative man who held a long-standing rivalry with Councilman Tenzin. He sought to fight the Anti-bending Revolution with violence rather than peaceful negotiation. He was willing to go to extreme lengths to win the conflict against the Equalists, even if it meant fanning the flames of aggression and risking the lives of innocent people. Tarrlok worked to conceal his identity as son of the infamous fugitive crime boss, Yakone, but the actions of Avatar Korra and his own unique ability to bloodbend without a full moon exposed his ancestry to the public. The younger brother of Noatak.

Hiroshi Sato was a nonbending industrialist and the founder of Future Industries, whose family lineage extends back to the first Fire Nation colonists. A brilliant inventor, he designed the revolutionary Satomobile, an idea that caused him to become the captain of industry in his era. This happens later on: During a police search of his secret factory, he revealed himself to be an Equalist, creating high-tech weaponry to fight against benders, and later became one of their most recognizable leaders. He was imprisoned for his crimes after the Anti-bending Revolution was put down.

Lin Beifong is the Chief of Police of the Republic City Police Department, the daughter of Toph Beifong. She is a metalbender. When first meeting Avatar Korra, she does not care for her too much due to her strongheadness.