King's Quest 8: Connor gets tired of trying to save the world mid-game and starts going insane; he starts talking to the statues as if they were alive again and thinks he hears responses.
King's Quest 7: Valanice gets so comfortable in the coffin she sleeps for 40 years; by that time Rosella gave up waiting for her mother, married Edgar, and had 10 kids.
King's Quest 6: follow-up to ending: Alexander forgets the 1-year anniversary of his marriage to Cassima and is later found in a pub soaking wet.
King's Quest 5: Cedric gets a little worried about Graham in the Evil Forest and goes after him, only to get stuck in the honey Graham used to catch the elf. He was a bit hungry because he got lost.

The elves found him a day later.
King's Quest 4: When Graham throws the hat, it goes too far and lands in the moat, where the moat monsters chew it up.
King's Quest 3: Mannannan trips over his own pet cat on the way down the stairs; production is halted as he slowly recovers from a heavy concussion.
King's Quest 2: Little Red Riding Hood catches Graham "checking" Grandma's mail.
King's Quest 1: The giant roc forgets to drop Graham and carries him into New York City; Graham has to beg some money off the streets for the flight home.