Leon in Resident Evil refers to Leon Scott Kennedy. Leon is one of the characters in Capcom's Resident Evil series. He is one of the two protagonists in Resident Evil 2, Resident Evil 4 and Resident Evil 6.
At the beginning of Resident Evil 2, Leon, a policeman from raccoon city, was late for his first day at work, which led him to solve the problem of zombie virus outbreak alone. In the game, he saved Claire Redfield who was attacked by zombies, so Leon made an alliance with her. Then they rescued the young Shirley Birkin and got help from the mysterious woman ada wong. Six years later (Resident Evil 4), Leon became an agent of the US federal government and rescued the president's daughter Ashley Graham from an evil cult. In Resident Evil 6, he continues to work for the federal government and is reunited with Ida and adult Shirley.