John Green is an acclaimed novelist of many books for Young Adults, such as the Printz Award winning "Looking for Alaska," the Printz Award runner-up "An Abundance of Katherines," and the Edgar Award and Corine Literature Prize winning "Paper Towns." He is required to write at least five books for his publishing company.
John is also well-known as being one half of the Vlogbrothers channel on YouTube, a channel in which John and his brother Hank Green regularly vlog back and forth to one another. John is the older brother and the one who had the idea for the video blog, originally an idea for the brothers to get to know one another better, but now has a substantial following. John's videos often consist of him discussing political issues (often while eating toilet paper or covering his face in peanut butter) and talking about philosophical topics.
John lives in Indianapolis, Indiana with his wife (who he affectionately refers to as The Yeti because she is never seen on screen and is presumably camera-shy), his son Henry, and their dog Willy (full name Firebolt Wilson Roberts). He often makes fun of the fact that he isn't good at math, one time forgetting that a minute has 60 seconds and instead saying it has 100.
Hank Green is probably best known for being one half of the Vlogbrothers on Youtube with his brother John Green. On said channel, Hank often writes and performs songs - usually of a comedic nature - talks about Harry Potter and other nerdy subjects, and does challenges/punishments that the Nerfighters give him (such as humping many of the landmarks in his town of Missoula Montana). A common joke for the Vlogbrothers is that when John does a Question Tuesday (rarely on a Tuesday), he answers the question, "Who the eff is Hank?" by reading the definition for another person, place, or thing, such as the sun or the breed of John's dog.
He is also known for being the creator of DFTBA records (a production company that signs YouTube artists such as Charlieissocoollike and DaveDays), the founder of EcoGeek (a very well-known and respected environmental website), and one of the founders of the Mars Society.
Hank lives in Missoula Montana with his wife - The Katherine - and their cat Cameo. He has Ulcerative Colitis, a problem which frequently plagues him, and has a habit of flipping off Hummers.