Appearance Guardian and Human: (Both)
Guardian Name: Jack Frost
Real Name: (Name before you became a guardian) Micah Stubbe
Age: (How old you were before you became a guardian) 17
Guardian of: Winter
Your Center: Fun/games
Personality: Jack Frost is a mischievous teenage hellion who has no interest in being bound by rules or obligations, and rather instead favors spreading his winter magic for the sake of the personal amusement of himself and children. Despite these traits, Jack is also gentle and generous.
The source of Jack's anti-social behavior towards the Guardians and refusal to adhere to rules was mostly because of his frustration with the Man in the Moon never answering his questions about who he was or why he was created, and also because no human, child or adult, was able to see him for centuries for no one had believed in him. But as Jack spends time in the Guardians' company, each individual would have an effect on him that would change him from a mischief-making winter spirit to a full-fledged Guardian in his own right, as well a hero.
It was his refusal to give up in the face of overwhelming odds that enabled him to help one child, Jamie, keep his beliefs in all of the Guardians as well as finally believe in Jack enough to see him. And it was his desire to protect Jamie, as he once did his sister, that helped him realize his center, as a Guardian, is Fun.
Jack proudly accepted the duties and responsibilities as the Guardian of Fun. His purpose, to spread the feelings of Fun and Joy so as to spread happiness to bolster the faith children have in the Guardians
Powers: Jack has incredible weather powers in which he controls with the help of his magic staff. He can call and ride the wind, float like a snowflake, conjure ice and snow, freeze objects or even people solid with a mere wave of his staff, make images drawn on frosted window panes come to life, and spread the feelings of fun and joy with his specialty: snowballs. Jack also later discovered that he can unleash energy bolts of ice when he first stood up against Pitch.
Magical Item: (It holds you power; Not everyone has one) Jack has a magic staff with which he can control the elements of winter. Originally, he thought this staff was the source of his power, when really it was just a conduit for him to channel the magic of winter that had really been inside of him, seen when he repaired it through sheer force of will after Pitch snapped it in half.
Fear: Fun dies.
Short Bio: After being tossed into a ravine at the south pole by Pitch, Baby Tooth shows Jack that he still has his teeth case that he took from Pitch's lair. It shows him the memory of him and his little sister on a frozen pond, and that she was on ice that was about to crack. He saved her by making a game out of hopping off the thin ice, then sacrificing his own life to get her to a safe spot. It was shown that he loved his sister very much, shown not only with this selfless act, but because, once his memory returned, he was only happy and grateful to know that she had survived, rather than be disheartened that he had drowned.
Crush: Once enough characters are in play I'll update this.