You better a premium user if you want to fight him alone. Ninja with Eye of Mirror and Hidden Silhoutte will easier to defeat him. Use Hellfire, Prison Colding Wave, and Mirror of Passions to rapid decrease his HP. You will need refresh and bring scroll to regain your HP.
Gingerbrat
Lv 60 World Boss ( Christmast 2010 )
HP 30000
Exp Bonus 1000
Gold Bonus 1000
Drops Christmast Weapon and Lv 1, 2, 3, 4 magatamas.