If the "Jeepers, Creepers, Where Is Peepers" episode never happened, and instead there was a Dexter and Dee Dee episode, it would have been a different experience for sure. The original episode was about Dexter's search for his missing laboratory monkey, Peepers. So, a Dexter and Dee Dee episode could have revolved around some other adventure or mischief they get into. Perhaps, Dexter could have been working on a new invention, and Dee Dee accidentally interferes with it, causing chaos in the lab. Or, they could have been trying to build a treehouse in the backyard, but end up getting into a fight over how to do it. The possibilities are endless with Dexter and Dee Dee! One thing is for sure, a Dexter and Dee Dee episode would have been super entertaining, just like all the other episodes of Dexter's Laboratory. Their sibling rivalry and wild antics have always been a fan-favorite, and a standalone episode would have only added to their legacy.