John McCoy is a character in Disco Elysium.
Background
Lieutenant John "The Archetype" McCoy is an officer of the Revachol Citizens Militia and a member of Precinct 41 within the Jamrock Quarter. He does not appear in-game; McCoy is exclusively mentioned through passive Esprit de Corps checks along with several other officers from Precinct 41. He has an unnamed partner.
In a passive Espirit de Corps check, McCoy tells his "babe" that he kills one or two people a week. It gives him no grief; it is like "brushing [his] teeth" to him. This is concurrent to the information that Precinct 41 is a violent district, as mentioned by Lieutenant Kitsuragi.
McCoy is also mentioned by Kitsuragi in-game when Harry asks Kim to join his precinct. Kitsuragi states that he looks forward to working with Pryce, McCoy, and Berdyayeva.