| Jerry | Aranzadi | The Basque bartender. |
| Isaac | Bloomfield | Mrs. Hayden's doctor. The doctor that Walt asked help from. |
| John | Buell | One of Lucian's poker buddies. |
| Frank | Carlton | The surgeon. |
| Andrew | Carnegie | The library owner. |
| Lucian | Connally | The former sheriff. Aka: Doolittle Raider. |
| Jimmy | Doolittle | An American General. |
| Dwight | Eisenhower | The 34th U.S. President. |
| The | Ferg | Walt's associate. |
| Paul | Hanson | The man that Walt spoke to about Steamboat. |
| Mrs. | Hayden | One of the patients at Durant Homes. |
| Gerald | Holman | One of Lucian's poker buddies. |
| Guy | Holt | The Steamboat's former rider. |
| Tom | Horn | A Wyoming Legend. |
| Lester | Hunt | The Secretary of State. |
| Mary Jo | Johnson | A member of the staff at Durant Homes. |
| Rick | Koehmstedt | The airport manager. |
| Tom | Koltiska | One of Lucian's poker buddies. |
| Walter | Longmire | Narrator and Protagonist. Aka: Walt. |
| Julie | Luehrman | A part-timer at Cady's school. Lucian's co-pilot at Steamboat. |
| Jake | Maring | The Steamboat's former rider. |
| Lena | Moretti | Victoria's mother. |
| Victoria | Moretti | Walt's undershift. |
| Mrs. | Oda | Amaterasu's grandmother. |
| Henry | Standing Bear | Walt's best friend. |
| Allen | True | The rider of Lord Of The Plains. |
| Dick | Yentzer | Lucian's original poker crew. |
| Jack | Yentzer | Dick's brother. |
| Amaterasu | | The dying girl that Lucian and Walt helped. |
| Cady | | Walt's daughter. |
| Dog | | Walt's dog. |
| Emma | | The administrative officer. |
| Lola | | Walt's granddaughter. |
| Martha | | Walt's late wife. |
| Ruby | | Walt's dispatcher. |
| Steamboat | | The legendary horse. |
