Rudolph the Reindeer

Rudolph the Reindeer is a candy addicted and one of the nine Reindeers fighting under the Grand Santa Claus' commands in order to defeat Cauchemar, which, being the personification of the pain and sadness felt by the souls of humans who have suffered and committed suicide, attack human children whose souls are still pure. However, after 200 years of performing this duty, the Grand Santa Claus, Klaus-sama, had reached his limit and was about to die, and so he inserted his own powers into a snowflake and released it all over the world, in the search for new vessels and sucessors. Each of the nine Reindeers were then given the mission of going out on a journey in order to find these sucessors and continue to fight the Cauchemar. While in the search for the person in whom the crystal dwelled, Rudolph went to London and met Salt, explaining him that his eyes had become silver thanks to the Santa Claus' snowflake that had entered his body and then acknowledging him as the ninth sucessor of the Santa Claus. After the contract between them was finally made, time kept on passing by and both of them continued to fight the Cauchemar, as seen in Noel La Neige.