Chuck Norris just turned 75 on March 10. He's born as Carlos Ray "Chuck" Norris and he's an American martial artist, actor, film producer and screenwriter. His career as a martial artist flourished after he served in the United States Air Force. He has also founded his own school, Chun Kuk Do.

Chuck Norris' career has spanned for seven-and-a-half decades. The 75-year-old legendary martial artist and actor has gained a notorious reputation in international karate competitions.

As Chuck Norris celebrated his 75th birthday, we are giving you 5 fascinating scoops about his life.

1. Chuck Norris has become the Internet's iconic meme of unbridled masculinity, inspiring a series of satirical factoids known as "Chuck Norris Facts," which document fictional, often absurdly heroic feats and characteristics about the actor. On March 10, The Telegraph reported "Chuck Norris Facts" mushroomed to a Twitter account (@chuck_facts) that aims to provide fans with a stream of facts to 270,000 followers.

2. Chuck Norris, 75, was a six-time undefeated World Professional Middle Weight Karate Champion. According to The Independent, he became the first man in 1997 from the West to be awarded an eighth degree Black Belt Grand Master ranking in the tradition of Tae Kwon Do, which dates back more than 4,500 years.

3. In 1990, Norris founded the Chun Kuk Do style, which loosely translates from the Korean as "The Universal Way." He is also the founder and chairman of the United Fighting Arts Federation. In 1992, he created KICKSTART KIDS Foundation, which aims to build the youth's strong moral character through martial arts training.  

4. The 75-year-old actor, Chuck Norris, is also an author. He wrote several books including "Black Belt Patriotism: How to Reawaken America" and the autobiographical, "Against All Odds." As a pious Christian, he has also authored religious-themed titles such as "The Justice Riders."

He also writes a column for the conservative Website WorldNetDaily.  

5. Norris revealed in his book, "Against All Odds," that his daughter Dina was the result of an extramarital affair. Although she learned that Norris was her father when she was 16, he explained that he did not meet her until she was 26. She sent a letter to his home informing him of their relationship. After meeting her, Norris said he knew she was his daughter upon seeing her.

Currently, 75-year-old Chuck Norris, his former model wife, Gena and their twins, Dakota Alan and Danilee Kelly are living on their family's ranch near Houston.