- Kellan attended the 2009 Comic-Con convention in San Diego, California with The Twilight Saga: New Moon cast.
- Kellan was featured in People magazine's "Summer's Hottest Bachelors" 2009.
- Kellan intended on keeping his natural curly hair for the role of Emmett Cullen in the film, Twilight, however, he had recently had a buzz cut for a different film and his hair didn't grow fast enough for the filming of Twilight.
- According to Kellan, he wants a good girl with a little bit of a bad side.
- Kellan's favorite book is "Wild at Heart". He is also a fan of John Grisham's books.
- Kellan's role models are his mom, Robert Redford, and Leonardo DiCaprio.
- According to Kellan, he and Peter Facinelli would play pranks on the Twilight cast and crew.
- To "buff up" for Twilight, Kellan ate a lot of protein. He actually eats sixteen eggs for breakfast.
- Some of Kellan's favorite musical acts are Modest Mouse, Citizen Cope, 2-pac, Blue Man Group, Blue October, Chevelle, Coheed and Cambria, Damian Marley, Dilated Peoples, God Lives Underwater, Incubus, Jack Johnson, Lupe Fiasco, Matisyahu, Nickelback, OneRepublic, Orgy, A Perfect Circle, The Postal Service, The Red Hot Chili Peppers, The Red Jumpsuit Apparatus, and Until June.
- If Kellan were stranded on an island and he was able to have one gadget, he would have to have his Microsoft Zune.
- Kellan is a fan of the Phoenix Suns.
- The most embarrassing place his phone ever began ringing was during a church baptism. His ring-tone was Sir Mix-A Lot's 'Baby Got Back'. The volume was on high and it took him at least 15 seconds to turn the ringer off.
- The biggest lie he has ever read about himself was that he was dating Paris Hilton.
- Kellan loves the Nintendo Wii. He once played a two-hour tennis game against his brother on "Wii Sports".
- If Kellan had to choose between a Blackberry, Sidekick, or Treo, he would choose a Treo.
- Kellan has been modeling since he was 13 or 14
- Before breaking in to acting, Kellan was to attend Orange County's Chapman University for chemical engineering.
- He is real life friends with Twilight co-stars Nikki Reed, Ashley Greene, Jackson Rathbone, Taylor Lautner, and Robert Pattinson.
- Kellan's favorite place is South Africa.
- According to Kellan, his worst quality is his competitiveness and his best quality is how easy going and fun loving he is.
- Kellan's guilty pleasure is anything with strawberries or strawberry flavor.
- Kellan is very athletic, he loves football and boxing.
- Kellan's favorite designer is James Perse.
- Kellan can speak fluent Spanish.
- Kellan wears size 12 in shoes.
- Kellan's eyes are blue.
- Kellan is 6'1" (1.85 m) tall.
- Kellan has six brothers and one sister, he's in the middle according to birth order.
- Kellan says he was a 'mamma's boy' growing up.
- Kellan has a dog named Kola.
- Kellan lives in California with his four roommates.
- Kellan's nickname is 'Krazy Kellan', given to him by his family.
- Kellan became a fan of John Grisham while filming Generation Kill in Africa.
- Kellan was in the Elizabeth Arden Fragrance commercial, starring Hilary Duff.
- Kellan was in the Diet Mountain Dew "Ferret" commercial.
- Kellan appeared in Hilary Duff's music video of her single With Love.
- Kellan: When I was a kid, I'd work on my grandparents' farm [in Iowa], cultivating the beans, spraying them, killing all the weeds, which today isn't that cool.
- Kellan: (on where he see's himself in five to ten years) I'd like to continue acting for as long as possible. I truly love it and I am lucky that not only is it my career but it's something I really enjoy doing so it doesn't feel like work. Hopefully in ten years, I'll have an amazing family with a beautiful wife and little Kellan's running around to play football with.
- Kellan: (on fame) But it's definitely been humbling. To have someone who wants to take a picture with me or get an autograph, I mean, I'm just a normal person who acts. It's all for them so I'm quite happy to do it.
- Kellan: (on "Twilight" director, Catherine Hardwicke) She's an amazing director. She's really an actor's director and [she] gets down there. She doesn't sit behind the camera. It was really cool taking directions from her because she was amazing.
- Kellan: For me to say 'You're beautiful', I can only say that to my girlfriend. The word 'beautiful' has such a different caliber than any other word out there, like 'sexy', 'hot', 'cute.
- Kellan: I bet on everything. Everything. It's just like, 'I bet you I can spin my chair longer.' Everything, I say 'I bet you.' I love to win.
- Kellan: (on the best thing about acting) I have a lot of favorites, mainly the traveling! That is why I prefer filming movies versus Television. TV you could be stuck somewhere for years if the show does well enough, but movies shoot everywhere, and that is sort of a big selling point for picking projects...where is it shooting! I also love being able to be a completely different person in roles from one extreme to the next. Plus all the cool stunt work I am able to do if they have stunts for me.
- Kellan: (on what kind of acting he likes to do) I've always been a film junkie but I love TV as well.
- Kellan: (on why he can get cast for different roles) I have blonde hair and blue eyes, and I'm big enough to play the stupid jock or the star football player. Being choosy allows me to not be typecast. I've gone from a Marine to a vampire to a jock, and I've changed my hair and grown it out. Now, I'm playing high school again. I love being able to switch it up and seeing how far I can go with the boundaries.
- Kellan: Well my family is really supportive of it all and is glad to see me on TV or on the big screen which is great. As far as school, well it affected that greatly since I quit going to school to take the biggest risk of my life and pursue acting. I worked my butt off in high school and received a lot of scholarships for college and to throw all that away for acting was tough for my family, but it was just something I felt my heart pulling me towards and don't regret a single minute of it. I love to act!
- Kellan (about the 'Twilight' cast): This cast rocks! We get along so well together it's like a real family which is great to see.
- Kellan: I'm a farm boy who just wants to have a good laugh in life, with no regrets.
- Kellan: I'm a fish. I've been swimming my whole life.
- Kellan: When my pet Doberman passed away, I felt like I lost my best friend.
- Kellan: I love life way too much and find fun in almost anything. I'm a chameleon.