File:Doom2016Codex.jpg

Summary
An image of the codex in Doom (2016), displaying information about the Doom Slayer and a page taken from the Book of Daeva, a tome found in Hell, which shows the warrior fighting demons bare-handed with assistance from the Night Sentinels. A mysterious unnamed hooded figure floats as a presence in the distance, watching the battle from afar. In-game screenshot is fair use for codex, Doom Slayer, and related articles to illustrate the subject in question.