"Diablo 4 Villains Collide with Call of Duty in Haunting Halloween Crossover"
Data miners have discovered references to a Diablo IV crossover in Modern Warfare 2, suggesting a collaboration between the two games in Season 6. Icons related to the Diablo IV universe, including Lilith and Butcher, were found in Warzone after a game update. It is unclear how these characters will be incorporated into the Call of Duty universe.