Jonathan is a typical 21 -year-old human, backpacking his way across Europe in his continuing worldwide travels. He is confident, full of life, talkative, curious and good-natured—not to mention amazing on a skateboard or a scooter. His motto is "just roll with it." Now, in his wandering, he's stumbled onto a hotel full of monsters. To help him blend in (and keep the monsters unaware of the security breach), Dracula disguises him as Johnnystein, Frankenstein's supposed cousin. Drac's plan backfires, however, when his daughter Mavis and 'Johnnystein' "have a zing", and Jonathan ignores his earlier promise to Drac, to run at his first opportunity.

Jonathan is an easy-going, happy-go-lucky young man whose presence breathes new life into the monster world, "yet he is unaware that he is the catalyst of change," says producer Michelle Murdocca. "He simply points out things that are going on around him that the others should have recognized long ago, helping other characters discover a path to change their perspectives, in a non-threatening way."