As a special child  of the yellow-eyed Demon, he was completely unaffected by the powers of other said special children.  Before he even drank the plasma, this immunity was in effect, which is why he wasn't susceptible to mind control and the Croatoan Virus.

The settlers, who arrived in 1587, disappeared in 1590, leaving behind only two clues: the words "Croatoan" carved into a fort's gatepost and "Cro" etched into a tree. Theories about the disappearance have ranged from an annihilating disease to a violent rampage by local Native American tribes.

Warzone Caldera, which was renamed last year, will shut down on September 21, 2024 so that Activision can "focus on future Call of Duty content including the current Warzone free-to-play experience." The original Warzone stopped receiving updates last year after it was supplanted by its official sequel, Warzone 2.

Activision announced that Warzone Caldera servers will shut down on September 21, 2024.