Jacob was an afterthought. He wasn’t suppose to exist in the original story. When I wrote the second half of Twilight first, there was no Jacob character. He started to exist about the point where I kind of hit a bit of a wall: I could not make Edward say the words, “I’m a vampire”. There was no way that was ever coming out of his mouth - he couldn’t do it. And that goes back to what we were talking about with characters. You know, he had been keeping the truth about himself secret for so long, and it was something he was so… unhappy about, and devastated about. He would never have been able to tell her.
And so I thought: How is Bella ever going to figure this out? But I had picked Forks already as the story’s location, and so then I thought: You know, these people have been around for a while, and they’ve been in this area before. Have they left tracks - footprints - somewhere, that she can discover an older story to give her insight?
That’s when I discovered that there was a little reservation of Quileute Indians on the coastline. I was interested in them before I even knew I was going to work them into the story. I thought: Oh, that’s interesting. There’s a real dense and different kind of history there. I’ve always kind of been fascinated with Native American history, and this is a story I’d never heard before.
This is a very small tribe, and it’s really not very well known, and their language is different from anyone else’s. And they have these great legends - even one that’s similar to Noah’s Ark story; the Quileutes tied their canoes to the tops of the tallest trees so they weren’t swept by the big flood - that I thought were really interesting.
And they have the wold legend. The story goes that they descended from wolves - a magician changed the first Quileute from a wolf into a man, that’s how they began - and when I was reading the legend I thought: You know, that’s kind of funny. Because I know werewolf people and vampires don’t really get along at all. And how funny is it that there’s that story, right here next to where I set my vampire story.
And so Jacob was born - as a device, really - to tell Bella what she needed to know. And, yet, as soon as I gave him life, and gave him a chance to open his mouth, I just found him so endearing. He took on this personality that was just so funny and easy. And you just love characters you don’t have to work for.
And Jacob was not an ounce of work. He just came to life and was exactly what I needed him to be, and I just enjoyed him as a person. But his appearance in chapter 6 was really it - that was all he was in the story. And then my agent loved this Jacob, and she’s never gotten over that. She was one hundred percent Team Jacob all the time.
Stephenie Meyer, The Twilight Saga: The Official Illustrated Guide