In the original Pac-Man (released in October 1980 as an arcade game in Japan), the ghosts, also known as the "Ghost Gang," each had unique AI traits that contributed to the game's enduring appeal.

Man, navigating through a maze that spells out “GLYCOLYSIS,” eventually facing a road bifurcation with paths leading to success or failure. On its way, the gastruloid-PacMan needs to avoid the ghosts ...

Pac-Man, the bright yellow ... comes from turning the tables by munching a power pellet, and sending the ghosts fleeing in all directions as they suddenly become edible themselves.