Nicholas St. North is the Guardian of Wonder.
North is an immense man; tall, buff, and a little rotund. He has bright blue eyes, thick black eyebrows, and a long white beard and mustache. He customarily wears a black fur hat, a long red coat with black fur trim, and a red plaid shirt. He has he words "naughty" and "nice" are tattooed on each forearm respectively and also carries two swords strapped to his waist when away from home.
North is a warrior with a heart of gold. Fierce, demanding, and impulsive, everything about him is larger than life. For North, nothing is impossible as long as he believes in it.
Before the Elves were Elves, they were North's fellow bandits, who fell prey to the wiles of the Spirit of the Forest and were turned to stone creatures for their greed. When they were later on revived, they stayed transformed as Elves became North's helpers.
The Elves don't actually make North's toys, but they receive the credit for it. They just play with the toys as market testing to see if they're fun. If they're not doing that, they have custodial duties such as sweeping and mopping. They also do party decorations and caroling.
Jack: Why me?
North: You have something very special inside, and we can't do it without you.
Jack and North are friendly towards each other possibly due to the fact they both (on different levels) represent Christmas. Out of all the Guardians, North shows the most faith in Jack, teaching him about what every Guardian must discover for him or herself, their center.
Jack respects North the most out of the Guardians and North has even shown himself to be something of a father-figure to the trickster.
The Yetis are North's real toymakers, contrary to popular belief that the Elves are responsible.