Captain John Price is the major fictional character in the Call of Duty series and one of the two main protagonists, appearing as an experienced soldier and a strong leader in the series. He is somewhat compassionate, but can be rather ruthless at times. His traits and abilities has remained unchanged throughout the series even with his Cockney accent. In all games, he appears with a large, iconic moustache. Captain Price is given the first name "John" in the fourth game of the series.
Captain Price first appeared as an English soldier featured in Call of Duty and Call of Duty 2 as a member of the British Army and British SAS during World War II. He appeared again in the Modern Warfare series, where he is playable in two flashback missions in Call of Duty 4: Modern Warfare, and in the final mission of Call of Duty: Modern Warfare 3.
It may be speculated whether it is the same Captain Price who appears in both the WW2-era games and the Modern Warfare games, set roughly 70 years apart. Sami Onur of the model department of Infinity Ward offers a retcon explanation for this—the Price from the Modern Warfare series is the grandson of the original Price.