Leven is fourteen years old, and he is an offing. He is the grandson of Hector Thumps, who was the maker of the gateway between reality and Foo. Leven can manipulate the future with his offing gifts. Leven is often called Lev, and his eyes burn gold when he uses his gift. He has a patch of white hair, which his guardians said had come when he had been frightened out of his wits one night.
Lev had been born on October fifteenth, at 2:30 in the morning. His mother, Maria Thumps, died in childbirth, shortly after naming him. His father had died in a car accident a week before Leven had been born. As he lay as an orphan, the nurses and doctors had debated on what to do with him. Then his mother's half-sister, Addy Graph, came by to pick him up. She had been snappy and mean, and took him away. Even then, Clover had been with him.
His new parents wouldn't stand to hear Leven talk or fuss. So from when he was little, he had slept in an old bed at the back porch of their trailer house. He didn't really care, though. He enjoyed counting stars and tracing long branches of the tree that was Geth. Since Addy had been terrified of Leven's possible friends coming to steal from her, Leven had been forbidden to hang around with other kids, so he had been alone for a long time - until he met Clover, which was the first domino in a set of dominoes that were adventures in his life. Then he met the love, and best friend of his life, Winter. They later realized their true destiny in the world.
Winter is a nit, which means she has a special talent (the talent of freezing things). She was born in Reality, but when she was young, she was accidentally sent to Foo. Later, she was spirited away to Earth by Amelia. She had remembered Foo before, but had forgotten it, only to have it remain dormant in her mind. She has pale skin, white-blond hair and deep green eyes. Winter's given name is actually Judy.
Before she had been born, Winter's father had left months ago, and her mother wasn't exactly overjoyed with her child. Her adoptive mother, Janet, wasn't exactly the parenting type, either. She had smiled twice in her life, and was bitter most of the time. Her adoptive mother was terribly cruel, and Winter was stuck living with her. She usually spent her time in the library, having no friends.
The only light in her dim life was a family called the Tuttles. They lived in a small, ramshackle house two blocks away from Winter and Janet. Tim Tuttle was a garbage man, and Wendy Tuttle was a kind woman, with two boys, Darcy and Rochester, who were eight and six. They were the only happiness in Winter's life. However, Janet did not approve of her going over to their house, so she had forbidden those visits, but Winter sneaked out and still visited.
On her thirteenth birthday, Winter realized her talent, and later set upon a journey. She runs away with Leven, Geth, and Clover to the mystical world of Foo. She also has a burning love for Leven that is thoroughly recognized when they accidentally let a longing lose.
Geth is the rightful ruler of Foo. His soul was placed into a seed of a Fantrum tree by Sabine and was left for the birds, but Antsel rescued him and took him to our world. He is a lithen, meaning he believes Fate will decide everything. Currently, he is in the shape of a toothpick, but at the end of the book, he is taken to the Fire of Turrets where he is restored to his powerful self. Geth is very wise and is rarely afraid because he is a lithen. He was formed into a toothpick after the seed he was in grew into a tree, and was cut down by Leven Thumps "father". However half of Geth's soul went into another toothpick named Ezra. The part of Geth that is not connected to rest of itself is his anger, which means that Ezra is one confused, angry, little toothpick.
The darkest and most evil being in Foo. He is the antagonist of the book. He, as well as Winter, are Niteons, or Nits as they are more commonly called. Both of them have the same power, the ability to freeze objects and people. In the book one, Sabine was blown into little bits and pieces, with one half in Foo and the other in Reality. In this form Sabine no longer has the ability to freeze things like Winter.
Clover is a wise-cracking sycophant from Foo, sent to look after Leven, who is his burn. He constantly tries to find a nickname for Leven (many of which include Chief and Big Man), as Winter calls Leven or Lev. Clover has the power to over shadow other people, and as a sycophant there is only one way that he can die, but only the sycophants know what that is. At the end of the book, however, Leven is told a secret that may be the key to killing sycophants. Sycophants wear silver robes at all times, this gives them the power to turn invisible when the hood is pulled up. In this hood they also have one pocket, but this pocket is like a void. It continues to amaze Leven every time Clover pulls more and more things out of this "void".
Jamoon is a rant who is one of Sabine's minions. He became the main villain of the story as some particles of Sabine were eaten by birds which soon died and yet still lived on. Jamoon's minions cannot be killed and are determined to do Jamoon's command.
Tim Tuttle was at one point Winter's neighbor. He has cared for her over the years. Once she goes missing, he searches for her. When he goes to the rude mother, she acts like she doesn't care.
He just happened to have one messed up life, yet he runs into Geth's evil half, Ezra. He travels to find the gateway to Foo. Along the way he runs into the evil remnants of what used to be Sabine.
Tatum Company cut Geth's soul in half, and so his angry evil side was transferred into another toothpick. Ezra seduced Dennis into working for him, but Ezra is using him. He lives to kill Geth. Ezra is a long, fancy toothpick used to hold sandwiches together. He has a purple frill on his head and only one eye.
