Except for one character, it appears that one of the most intriguing parts of the program is that the people go by the names of major cities throughout the world. The Professor is a completely separate and distinct persona, yet many fans are unaware that he, too, has an unofficial city name - Vatican City. Vatican City, a well-protected, secretive, and knowledge-filled city, is the ideal name for the figure played by Alvaro Morte. Another intriguing detail about this actor is that he has great eyesight in real life and it took him a long time to get used to wearing glasses, but the appearance was preserved in the program.