Li Fong is a quiet, intelligent, talented, and determined teenager. He is naturally gifted in kung fu, loyal, protective, and hardworking. Although he struggles with grief, loneliness, and adjusting to a new environment, he remains courageous and committed to improving himself. He values family, friendship, respect, and discipline.

Mia Lipani is a friendly, independent, compassionate, and strong-minded teenager in Karate Kid: Legends. She is caring, supportive, and loyal to the people she loves, especially her father, Victor. Mia develops a close friendship with Li Fong. She is confident, understanding, and determined, but also deals with complicated feelings from her past relationship with Conor Day. Her relationship with Conor is difficult because they used to be in a Romantic relationship and Mia has broke up with him, Conor keeps trying to get back with her even though Mia says No multiple times.

Mr. Han is a wise, experienced, disciplined, and patient kung fu master. He is protective, intelligent, and occasionally humorous, but takes martial arts and teaching very seriously. He becomes Li Fong's mentor, helping him develop his skills, regain confidence, and understand the importance of balance, respect, and self-control.

Daniel LaRusso is a kindhearted, courageous, disciplined, and experienced martial artist. He is respectful, determined, and protective of others. As a former student of Mr. Miyagi, he teaches Li Fong Miyagi-Do karate, emphasizing balance, patience, defense, self-control, and using martial arts responsibly.

Conor Day is a confident, competitive, skilled, and proud karate fighter. He is aggressive, stubborn, and sometimes arrogant, especially when challenged. He becomes Li Fong's main rival because of his connection to Mia and his competitive nature.

O'Shea is the main antagonist. He's a ruthless, manipulative, and intimidating martial arts instructor who runs a dojo and works as a loan shark. He's Conor Day's sensei and uses fear, intimidation, and dishonorable tactics to maintain control. He's the complete opposite of what martial arts should represent: discipline, respect, and honor.

Victor Lipani is a former professional boxer and hardworking pizzeria owner who is Mia's father. He's kind-hearted, humorous, protective, and determined, but struggles with financial problems. Despite his setbacks, Victor is courageous, resilient, and willing to fight for the people he loves. He also becomes a mentor and close friend to Li Fong.

Dr. Fong is Li Fong's caring, protective, and hardworking mother. She is intelligent, responsible, and determined to give her son a better future. She values family, education, and safety, and sometimes worries about Li's involvement in martial arts because she wants to protect him from danger.