The four ghosts in "Pac-Man" are named Inky, Pinky, Blinky and Slinky

Explanation

The ghosts are named Inky, Pinky, Blinky, and Clyde. Clyde is the American nickname for the orange ghost, whose original Japanese name is Otoboke (or Guzuta), roughly translating to "feigning ignorance" or "slow and stupid." Clyde is the only name that does not end in "-y" or rhyme with the others, which is a quirk that neatly fits his role as the "odd one out" who wanders off independently instead of coordinating with the other three ghosts.