While Leon Kennedy remains a massive draw for Resident Evil 9, the game's terrifying new zombies are a very close second. Featuring a fresh mutation of the T-virus, these infected bring a disturbing twist to the franchise by retaining fragments of their original human memories and habits.

The Horror of Human-Like Behavior

Director Koshi Nakanishi explained in an interview with Eurogamer that this semi-human behavior is central to the game's horror. The goal was to move away from mindless monsters toward something far more unsettling.

"It's creepier to see that they're slightly more human in the sense that they're repeating certain actions," Nakanishi said. "It almost looks like you could go up to them and talk to them and ask them what's happening. But of course, they wouldn't be able to reply."

This new strain of the T-virus introduces several unique enemy types designed to unsettle players:

  • Cleaning Zombies: Undead individuals who frantically scrub walls and floors (and will attack you if you get too close).
  • Chungus Zombies: Heavily mutated creatures driven by an insatiable hunger.
  • Undead BSAA Soldiers: Former soldiers turned into zombies that can actively pepper players with gunfire.

Raising the Bar for Resident Evil Zombies

For longtime fans who have encountered every iteration of the Progenitor virus, Nakanishi felt it was necessary to introduce unpredictable elements to prevent the horror from becoming stale. The new zombies are significantly more dangerous than previous iterations, capable of using items like IV stands as weapons or even operating military mortars with surprising accuracy.

"We've seen so many zombies over the years that if we can't make them do something a little out of the ordinary or unpredictable, then they start to become more difficult to make consistently scary," Nakanishi noted.

However, the developers were careful not to push the Resident Evil 9 scares too far. The team focused on finding a "sweet spot" of tension that remains addictive rather than unbearable.

Balancing Tension and Action

Producer Masato Kumazawa emphasized that much of the game's fear comes from the atmosphere and pacing rather than just direct combat. He noted that the dread of not knowing when an enemy might appear can be more effective than a standard jump scare.

"It can be scarier in scenes where there aren't any zombies yet," Kumazawa added. "The tension of not knowing where they're going to come from... is scarier than the specific moment you actually encounter a zombie."

This balance is most evident in the Rhodes Hill Hospital section, which stands as one of the most intense segments in the series. Playing as Grace in first-person provides some of the most visceral scares in Resident Evil history, while Leon's playable sections offer a much-needed burst of high-octane action to balance the dread.