Pinocchio

Pinocchio is the main character of the The Adventures of Pinocchio (though he doesn't appear or is mentioned directly) in any source, several ideas from the story appear in the King's Quest series.

Behind the scenes
The Marionette and Toymaker and his son Gepeppo and Gepeppito. amd the Marionette that Graham trades for the snowsled are allusions to the Italian Toymaker Gepetto, from Florence. While there is nothing to directly give their cultural heritage in KQ5 floppy, they are made to be more dutch/german in the CD rom version (and given Italian names in the Companion).

One of the death scenes at the Cliffs of Logic states: Don't just wander, Alexander! Let your conscience be your Guide. This is a reference to a quote from Jimminy Cricket a character from the Disney's Pinnochio.

In KQ4 is a whale that swallows Rosella, while this is certainly a reference to Jonah and the Whale, it may also be a reference to Monstro the well from Pinnochio. A whale with a pentiant for swallowing ships and rowboats (as seen in the game).