Artery

Artery is a character from Darren Shan's Demonata series of books. He is a demon with green skin, flames for eyeballs, insects (that vary) constantly eating his scalp and a small mouth in each of its palms filled with sharp teeth (but no tongue). His bodily proportions are similar to a toddler's, but he has a much bigger head than any human. He is Lord Loss's favourite familiar, and was partnered with Vein (a wolf demon with a crocodile's head and a woman's hands), until she was killed for disobeying Lord Loss. He has appeared in every book so far, although his appearance in 'Bec' is debatable as there is a demon with a similar description to him but it is not named.

The Demonata

 * Lord Loss'
 * Demon Thief
 * Slawter
 * Bec
 * Blood Beast
 * Demon Apocalypse
 * "Wolf Island"
 * "Death's Shadow"
 * "Dark Calling"

Short Stories

 * Shanta Clause

Importance
Artery seems to be the most important demon, besides Lord Loss. He has definitely appeared in five books, and may have appeared in Bec (See above), so it is likely that he will play an important role in the series. It is strange that Artery is so important to Lord Loss as he is not one of the most powerful demons. At the End of Demon Apocalypse, Artery is killed by Bec.