He is portrayed by Taylor Frost.
Paul and his family meet Albert Einstein, as he is to stay at their home in Aarau, Switzerland until he finishes his studies. He also participates in his family's debates at dinner and encourages Albert to join in on the conversation.
When Albert passes his entrance exam for Zurich Polytechnic, Paul and the Winteler family say their farewells to him.
Paul joins with his family, as well as Albert, Maja, and Albert's friend Michele Besso, as they celebtrate his sister Marie's birthday. Paul listens as his father Jost celebrates Albert and his sister for being so close to family, thanks Albert for bringing Michele over, hoping for him to come to more dinners in the future, and thanks Albert for his companionship with Marie.
Later, Paul and his siblings say good bye to Albert and Michele as they go back to Zurich.