100 Things You Never Knew About Resident Evil
98. The Origin Of Crimson Heads
It didn't take long for Capcom to want to experiment with Resident Evil. After all, part of what makes great horror is the unexpected. That's why when returning the original story in the 2002 remake, Spencer Mansion veterans were thrown off when previously incapacitated zombies would get back up as Crimson Heads and chase them to the closest door.
However, running zombies had previously been considered for the franchise a little bit earlier. In a developer diary looking back at the history of Resident Evil Zero - and specifically how it started out life on the Nintendo 64 - game director Koji Oda off-handedly mentioned that they had experimented with enemies being more reactive to gunfire and, of particular note, "running zombies".
Whilst we don't know if this idea eventually became Crimson Heads exactly, even Oda-san himself mentioned that the concept retroactively feels like a precursor to them. Perhaps it was inevitable.