The official descriptions from the Dreamworks site for those who haven't seen them. :) Pictures are from Dreamworks, they're the official timeline covers so you can use them if you'd like. Enjoy!
Jack Frost is a supernatural being much like the Guardians. But unlike the others he is a loner, the classic rebel without a cause. He too is immortal, eternally young, charismatic, and smart. He has incredible weather powers that he controls with the help of his magical staff; he can call the wind, storms, cold and snow. He is the spirit of mischief and chaos personified. But until he can discover the purpose behind his amazing powers, he will never be a true Guardian.
Jack Frost is more than a myth.
You probably know North as Santa Claus, but he is not the typical belly-full-of-jelly character with which you are familiar. North is a warrior with a heart of gold. He has "Naughty" tattooed on one arm and "Nice" on the other. Fierce, demanding, and impulsive, everything about him is larger than life. For North, nothing is impossible as long as he believes in it.
Santa Claus is more than a legend.
Tooth is a beautiful, elegant, blue and green iridescent fairy. She is half-human and half-hummingbird. Full of energy and always in motion, her feet never touch the ground. Everyone knows the Tooth Fairy collects children's teeth with the help of her fleet of mini fairies that patrol the globe 24/7. What you don't know is that the teeth hold the most precious childhood memories. Tooth safeguards these teeth in her palace and returns the memories when you need them most.
The Tooth Fairy is more than a fairy tale.
Bunny, as he's known, is a cool calm Australian, as dry as the Outback. A natural ranger, he is an in the dirt, rough and tumble protector of nature. He follows nature's rhythms and when it's time for action he waits for the perfect moment to act. And when he finally does, it's all over in a heartbeat with the help of his enchanted boomerangs and exploding easter eggs. Bunny is completely unflappable. The only thing that does get under his skin is North's constant ribbing about how Christmas is more important than Easter.
The Easter Bunny is more than a fable.
Sandman is the guardian of dreams. Although he doesn't speak, he communicates through sand images that he conjures above his head much like a game of charades. Think Harp Marx meets Buddha. He is ancient and wise and incredibly powerful. Although peaceful by nature, the Sandman is a fierce fighter expertly wielding his dreamsand whips to fight Pitch and his nightmares.
The Sandman is more than a dream.
Pitch is the boogeyman that hides under your bed and the reason you're afraid of the dark. He's had to endure generations of parents telling their children not to fear or believe in him, while the Guardians are beloved by all. But in his underground lair Pitch has devised a plan to change all that. With the help of his sinister army of nightmares. Pitch plans to destroy belief in the Guardians and all they represent - until there is nothing left but fear.
Pitch is more than a nightmare.