![His Royal Slyness](https://image.tmdb.org/t/p/original//eLAxu4xF8kroNEk7TKg3lIweVUg.jpg)
![His Royal Slyness](https://image.tmdb.org/t/p/w200//uDrBh4qHEAYcYdVmqlAIeZaAxyn.jpg)
His Royal Slyness
27 minutes1920-02-08
5.8
Watch Trailer
A young adventurer trades places with a European prince and falls in love above his station.
Cast
![Harold Lloyd](https://image.tmdb.org/t/p/w200//alOOCzYnr08aEYekwsA3onrdeXk.jpg)
Harold Lloyd
The American Boy
![Mildred Davis](https://image.tmdb.org/t/p/w200//vkWEUDIbRVqjn5Pfvqc8IMpYvdj.jpg)
Mildred Davis
Princess Florelle
![Harry 'Snub' Pollard](https://image.tmdb.org/t/p/w200//srCQa37TG3RHKx5PuthzjsTpe6n.jpg)
Harry 'Snub' Pollard
Prince of Rochquefort
![Gus Leonard](https://image.tmdb.org/t/p/w200//7g5P7qb8EDDn3lojyoU6EpQSSVT.jpg)
Gus Leonard
King Razzamatazz / Bolshevik orator
![Noah Young](https://image.tmdb.org/t/p/w200//AbjY2OU03tB5LiadjaJtBwacj7d.jpg)
Noah Young
The Prince's tutor
![Roy Brooks](https://image.tmdb.org/t/p/w200//1Bk0ZGs6VDaBPdUHuE13dJf7fE8.jpg)
Roy Brooks
Courtier
![William Gillespie](https://image.tmdb.org/t/p/w200//pzl1sf0FRwey3Xpj1bWKxrbrdOq.jpg)
William Gillespie
Courtier
![Helen Gilmore](https://image.tmdb.org/t/p/w200//8YkdtQhmNnH8AyuQ41P8xhfgKc4.jpg)
Helen Gilmore
Queen Razzamatazz
![Gaylord Lloyd](https://image.tmdb.org/t/p/w200//A6VLLwH8PcatCyp21B3XKwAzQNX.jpg)
Gaylord Lloyd
The Prince
![Marie Mosquini](https://image.tmdb.org/t/p/w200//wJBhBG8DX3BnUXE6tg2jbdGECKS.jpg)
Marie Mosquini
The Vamp
![Charles Stevenson](https://image.tmdb.org/t/p/w200//xNHHIH5FHjJ905yp3rtloWZ4IUU.jpg)
Charles Stevenson
Man who won't buy books
![Robert Emmett O'Connor](https://image.tmdb.org/t/p/w200//udAKCPDJt2yQ7gdqdhZLvA73BSl.jpg)
Robert Emmett O'Connor
(uncredited)
![Wally Howe](https://image.tmdb.org/t/p/w200//dCRkE4f9senVlBcCSGLT1Eubqcq.jpg)
Wally Howe
![Estelle Harrison](/_next/static/media/notFound.aecd17f8.png)
Estelle Harrison
![Sammy Brooks](/_next/static/media/notFound.aecd17f8.png)