Calcifer

Calcifer (カルシファー, Karushifā) is a fire demon that fuels Howl's Castle, as seen in the film, Howl's Moving Castle. Calcifer is voiced by Tatsuya Gashuin in Japanese and by Billy Crystal in English.

Appearance
Calcifier appears as a living ball of fire with eyes and a mouth. He is usually orange-yellow in color, but this appears to change with his emotions and size. Calcifier's size also changes depending on the type and amount of fuel he is running on.

Personality
Calcifer is bound to the confines of Howl's Castle after he struck a deal with Howl years prior. He later strikes another magical bargain with Sophie, hoping she could break his curse. Despite his grandiose threats and prickly demeanor, Calcifer cares about Howl, Sophie and their makeshift family. He worries about Howl's penchant for war, and that it will inevitably change him.

History
Calcifer is in a magical contract with Howl. He was originally a falling star, whom Howl was able to catch before he fell to earth and extinguished.

He promises to use his magic to break the curse on Sophie, providing she breaks the contract between him and Howl. Howl describes Calcifer as "his weakest point", because Calcifer wouldn't give away another demon if it entered the castle, even if it had hostile intentions. However, Howl's statement is true in more ways than one.

Calcifer's role in the film is somewhat similar to his role in the book, moving Howl's Castle. Unlike in the book, however, he is forced out of the hearth by Sophie, causing the castle to collapse and breaking the connection it had with Market Chipping in an effort to find and save Howl. By consuming Sophie's hair, he is able to have enough power to move the castle across The Wastes to find Howl.

Behind the Scenes
Art Director Yôji Takeshige explains Calcifer's appearance, "At first I thought normal fire colors would be bland for Calcifer so I made his firelight greenish in my concept art. The only thing was that the green firelight would be reflected off the other characters, giving them a greenish tint. That would have given their faces a strange hue, so after Michiyo Yasuda from color design conducted several tests, we decided to use the normal color of fire to depict Calcifer."

According to Atsushi Okui, director of digital imaging, "With Calcifer, there were three points we had to cover for digital image processing: softening, transparency, and diffusion as a light source. I first planned on making him look more vibrant and flashy, but then we decided his image had to be congruent with the family-like atmosphere later on in the film, so we went back and toned down a little. The dazzling features of his first appearance are left intact for impact, but I gradually began to grasp Calcifer's personality later on."

Quotes
""Here's another curse for you - may all your bacon burn.""

- Calcifer

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Calcifer ハウルの動く城 Кальцифер 卡西法