The One-Armed Man is identified as Fred Johnson in the two-part series finale, "The Judgment". He is also referred to as Johnson in "The Ivy Maze" (where he is posing as "Carl Stoker") and at one point Fritz Simpson (William Windom) addresses him as "Fred". (That episode is where Kimble, Gerard, and the One-Armed Man all appear in the same scene for the first time). This is the only consistent name that they have to go by, and both Gerard and Kimble refer to the One-Armed Man as "Fred Johnson" in a few later episodes; in the series finale Lloyd Chandler (J.D. Cannon) also refers to him as Johnson. However, when interrogated by Lt. Gerard in "The Judgment", the One-Armed Man denies that Fred Johnson is his real name. While the character's real name is never definitively established, a case could be made that it is "Gus Evans"; as revealed in "The Judgment", that was the name that he used "before" killing Helen Kimble, when he would presumably have had no need to adopt an alias.