MONACO - JUNE 12: Actor Joseph Morgan poses for a portrait session during the 52nd Monte Carlo TV Festival on June 12, 2012 in Monaco, Monaco. (Photo by Francois Durand/Getty Images)
1981 = Joseph Morgan was born Joseph Martin on May 16, 1981 in London, England. (Photo: Annette Brown/ The CW)
2011= The year the UK-born Joseph started working as an actor in the United States. (credit: Frazer Harrison/Getty Images)
LOS ANGELES, CA - DECEMBER 03: Actor Joseph Morgan arrives at the KIIS FM's Jingle Ball 2011 at Nokia Theatre L.A. Live on December 3, 2011 in Los Angeles, California. (Photo by Frazer Harrison/Getty Images)
91: The number of years since Klaus met Stefan Salvatore in Chicago.
1,013,060 = Joseph Morgan had 1,013,060 twitter followers as of August 5, 2013. (credit: Frederick M. Brown/Getty Images)
Check out our upcoming May birthdays calendar to see more of your favorite CW stars! PASADENA, CA - JANUARY 12: Actors Joseph Morgan (L) and Shane West speaks on 'The Bad Ass Boys of the CW' panel during the CW portion of the 2012 Television Critics Association Press Tour at The Langham Huntington Hotel and Spa on January 12, 2012 in Pasadena, California. (Photo by Frederick M. Brown/Getty Images)
5: The number of people Joseph's character Klaus has been "daggered" by on "The Vampire Diaries."
71= The number of inches that Joseph is tall. (credit: Pascal Le Segretain/Getty Images)
MONTE-CARLO, MONACO - JUNE 12: Actors Michael Trevino (L) and Joseph Morgan (R) attend a photocall for the TV Series 'Vampire Diaries' during the 52nd Monte Carlo TV Festival on June 12, 2012 in Monte-Carlo, Monaco. (Photo by Pascal Le Segretain/Getty Images)
1492: The year Klaus met Katherine Pierce, who has been running from him for 500 years.