Name: Alturi Iyrc
Sprite:
Race: Human
Skills:Flash-SteppingIce MagicEnceladus Eclipse (Alturi converts his ice powers into shadow equivilents for a short time)
Blizzard Blow (Alturi unleashes a torrent of sleet, hail and jagged ice particles at an opponent) (has nothing to do with lewinskys)
Kompressor's Fury (Alturi turns into pure shadow, allowing him to avoid physical attacks but significantly drains his energy in the process)
Weaknesses: All types of Fire magic and offensive types of Light magic, however while performing Kompressor's Fury he is vulnerable to all types of Light and Lightning magic.
Weapon: 
(Ice Axe)
Any other sprites: 
(Flash-Stepping)
Side: Lawful (partially Chaotic) NeutralBackstory/Description: Alturi Iyrc is an Ice Mage with
limited control over dark magic. He wields his powers over
nightmares and
hallucinations for the side of (ambiguous) good. Fight him?
An icy tomb awaits you. Escape?
Not going to happen. For he is Alturi. He will hunt you down to the end of the earth and scatter your remains all across the land.
Better not give him a reason too.
More Backstory-ey Backstory: Altrui Iyrc is a sort of non-cyborg Robocop who protected the defenceless
Ice Villages of the north. After the Fire Nation attacked, he fled with the rest of the survivors to the rest of the world and settled down in [insert whereever Menen wants it to be] and has since hunted down criminals the local law just can't catch and serves up a plate of his twisted justice to them.
Theme Song: Iced Innocence
Sorry for the TVTropes, but it helps explain what I mean.