Alex is cast as Number four in the 2011 film, I Am Number Four.
Alex's mother got re-married to Michael Ireland, a property developer.
In 2007 Alex was nominated in the Empire Awards, UK for 'Best Male Newcomer' for the 2006 film Stormbreaker.
Alex is cast as Kyle Kingson in the 2010 film, Beastly.
Alex featured as Bradley in the 2009 film, Tormented, alongside Skins star, April Pearson.
His nickname is A, which is short for Alex or Alexander.
His mother attended the same boarding school as Channing Tatum's mother, Gennifer. Both women are now in their 50's, and have been friends since the age of 13.
His mother Lee Ireland attended the same boarding school as Channing Tatum's mother, Gennifer. Both woman are now in their 50's and have been best friends since the age of 13.
His family is very close friends with Channing Tatum's family. In fact, they're so close, that the two families spend almost every major holiday together.
Alex has two tattoos; one (1) on his chest (of a crucifix) and another on his arm that says "What comes around goes around."
Alex has chosen to study drama full time at college.
Alex plays the role of Freddie in 2008 film Wild Child.
Quote on Alex from Anthony Horowitz
"We could not have chosen a better kid for the part, though Alex was never meant to be that good looking."
Alex's first commercial was at age six.
Alex did adverts for some yogurt brands at a young age.
Stormbreaker author Anthony Horowitz described Alex as coming from "an astonishing gene pool".
Alex attended Lambrook Haileybury in Bracknell, United Kingdon.
Alex is dyslexic.
Alex attended the same school as Daniel Radcliffe.
Alex likes to ski at Sandown.
Alex has three dogs. His first dog is a Tibetan terrier who is called Waggles. His second dog is a Boston terrier puppy called Tyson and his third dog is called Bo.
Alex is three (3) years older than his half-brother James Ireland, who is the son of Alex's mother and stepfather.
Over the holidays, Alex lives with his family in the centre of Windsor, Berkshire. His mother Lee Ireland, a former American television presenter, and property developer stepfather Michael Ireland have lived in the town for the past eight years.
Alex was nominated in the 28th Young Artists Awards for 'Best Performance in an International Feature Film - Leading Young Actor or Actress'.
One review of Pettyfer's performance described him as playing the role with an "earnest intensity," although another noted that he "isn't quite at ease as an actor."
Alex was replaced by Luke Ford in The Mummy 3, as Rick O'Connells's (Brendan Fraser) son.
Alex has a fear of flying.
Alex doesn't like football.
His parents divorced at a very young age and they have shared custody of Alex.
Alex attends Shiplake College, a prestigious college in Henley-on-Thames.
Alex has a freckle in the left corner of his mouth, which is often airbrushed off in movies.
Alex's favourite movie is the 1992 film Chaplin.
Alex auditioned for the lead role in the 2007 film Stardust, but missed out.
Alex says if he wasn't an actor, he probably would be a race car driver.
Alex met Ralph Lauren at a toy store in New York City.
Alex likes indie rock bands, such as the Kings of Leon and The Kooks.
Ewan McGregor, co-star of Alex's on Stormbreaker, gave Alex advice on separating his private and personal life. According to Alex, ever since he was told this, he has kept it in mind and used it.
Alex enjoys skiing, dancing, ballet and hockey.
Alex claims that he never talks about acting at school because some people interpret that as boasting, something Alex hates.
Alex wanted to be a policeman.
He would love to act with Tom Cruise.
He would love to work with directors like Steven Spielberg and George Lucas.
His idol is Al Pacino.
He got offered the roles of both Alex Rider in Stormbreaker and Eragon in Eragon. Because the filming would clash, he had to choose one over the other, so he chose Stormbreaker because it interested him more and he wouldn't have to fly anywhere for filming.
His movie debut was in the 2006 action film Stormbreaker.
His television debut was in Tom Brown's Schooldays (2005).
He attended Twickenham Preparatory School for some of his childhood.
At the age of seven, he was modeling for the company M&S and GAP.
His favourite colour is orange.
He finished school in July 2006 only at the age of sixteen, after passing eleven GCSEs.
He played Willy Wonka in a school production of Charlie and the Chocolate Factory when he was younger.
He briefly attended Millfield School, one of the largest and most prestigious private schools in England.
He was hand-picked by Anthony Horowitz, the author of the Alex Rider Adventures, to play Alex in the film Stormbreaker.
He has had a kidney disorder since early childhood.
He has a younger half-brother, James, who is a talented tennis player.
Alex: I was bullied at my old school and I've been tossed up in a blanket before I was thirteen (13).
Alex: I got a big shock when I first went to boarding school because you have to become independent.
Alex: (his views on euthanasia) I think it should happen for people who are sick and should be legal.
Alex: I want to have lots of bodyguards around me and be surrounded by beautiful women while watching my brother play at Wimbledon.
Alex: When you have already experienced going out and working in the real world, and you come back to school, you just see it as a playground and you don't want to be there any more.
Alex: Ewan McGregor once told me, "Work is work and home is home. Don't get them mixed up." Which is great advice.
Alex: (on television and film) Working on television is like being in a playground, but working on a film is like being in a big new world. It's quite hard working on a film, but we all got on like a big family which made it easier.
Alex: (on his first red carpet experience) My biggest fear was that there might be 5 or 6 kids there who just want an autograph, and then I would walk in and do my press. I got out of the car and it was probably 3 seconds and 3,000 girls were screaming for me.
Alex: (on Ewan McGregor) He was on set for two days. He's a wonderful guy. I had lunch with him a couple of times. He's very quiet in person, but he's a fantastic actor.
Alex: (on his co-star Mickey Rourke) He's fantastic. I always give everyone a clean slate before I meet them. First of all, he's a gentleman. He gave me 110% on camera and off. I really don't have any more words than respect for that guy. He helped me on the set.
Alex: (on his co-star Alicia Silverstone) I didn't see her much except in the one scene. She's great. It was a really hot day on the set because we didn't have any fans that day. It was boiling, and she gave so much energy and you really come out of a scene with her great.
Alex: (on some of his hobbies) I was tricked into swimming by my mother, which I love - it came in very handy. But go-karting, skiing, I know how to fly, thanks to my school - I joined the RAF for a bit, and learned how to land and take off a plane. But I've done all sorts of things in my life which really helped me towards Alex Rider.
Alex: (on his character Alex Rider) He's not Harry Potter, he's not got magic powers, he's not Spiderman. He is on the face of it an ordinary schoolboy, and only when you get to put him in danger does he begin to discover that he has these abilities.
Alex: (on his two biggest performances so far) They were both fun. I think probably Stormbreaker pipped it a tiny bit because it was a lot more effort and I got quite a bit more reward. You get to see what your fans really think about you and how the film's going to do - at the premiere.
Alex: (on his 'Stormbreaker' co-stars) In my eyes, they're some of the best actors working today. People like Bill Nighy and Mickey Rourke and Ewan McGregor. It was fantastic to work with such a great cast and a fantastic crew. I learnt so much from them.
Alex: (on acting) Of course, I love it. I love bringing characters to life and I love what I do.
Alex: (on Stormbreaker) It's a little bit more complex than the book. It's still full of action, but action with a bit of comedy and a bit of sadness... and that's what we want to give everyone out there.
Alex: (on his character Alex Rider) He's an action hero, and he'll go through the whole action thing, but he'll be in constant danger, and he'll have weaknesses like I think any other boy of 14, 15, 16 has weaknesses. He's vulnerable.
Alex: (on his film Stormbreaker) I think it will be a successful film. It's an action packed, comical, dramatic, lil' adventure which will take you on a ride for 90 minutes.
Alex: (his feelings on being chosen as Alex Rider) When you go through such a long process of auditioning, you kind of forget about getting it. It's more like you keep going up and having a little bit of fun. So finally when I got to play Alex I was like 'OK, cool'. I went for months and months of auditions.
Alex: (on being Alex Rider) I'm very fortunate that I've been given this opportunity and it's fantastic to play a role model.
Alex: (on his role as Alex Rider) I had to work extremely hard. I had three weeks of Kung-Fu martial arts, kick boxing you know, learning how to do a wheelie on a quad bike. It was quite a demanding role you know, it took a lot of energy.
Alex: I regret that I bullied fellow students. It's not good. The whole bully thing is just stupid, but I guess that I was exactly that.