Jerrod and Jake Wilson are of course cameos\in-jokes reference from the Sierra game Gold Rush. However it should be noted that all throughout King's Quest ZZT, Alexander has an odd way of referring to past events, characters or places, by the name of the game they occured in, so in a way the crossover is slightly more than just a cameo, since it fits into the KQZZT's universe's quirky version of a timeline.