A while back I did stats for Emirikol the Chaotic for 4e. Though lets be honest. Emirikol is an old-school bad guy. The oldest. Even before Bargel became Public Enemy #1 in the hearts and minds of D&D players, Emirikol was blasting people in the streets just because he could.
Here he is as a bad ass Eldritch Witchery Warlock.
Human, 19th Level warlock (The Goetic Lodge)
Hit Points: 66
Alignment: Chaotic Neutral (evil) (yeah I know, not a proper S&S alignment)
AC: 6 (talisman of protection)
Arcane Blast: 1-3 hp, 19x per day
Familiar: Fire Elemental Horse
7th level: Summon Lesser Elemental (Chaotic)
13th level: Summon Demon (Type I or II)
19th level: Summon Greater Demon (Type III, IV or V)
First: Black Flames, Chil Ray, Detect Spirits, Fey Sight, Ghostly Slashing, Minor Fighting Prowess, Silver Togue, Sleep, Spirit Dart
Second: Agony, Broca's Curse of Bable, Death Armor, Discord, Ghost Touch, Levitate, Mind Obscure, Phantasmal Spirit, Spell Missile
Third: Astral Sense, Cause Fear, Fly, Ghost Ward, Haste, Lesser Strengthening Rite, Liar's Curse, Protection from Normal Missiles, Speak with Dead
Fourth: Charm Monster, Confusion, Dance Macabre, Instant Karma, Phantom Lacerations, Spiritual Dagger, Tears of the Banshee
Fifth: Bad Luck, Death Curse, Dreadful Bloodletting, Feeblemind, Teleport, Wave of Mutilation
Sixth: Anti-magic Shell, Death Blade, Disintegrate, Mass Agony, Primal Scream
While it could be argued that he is a Wizard or Warlock, I think this works well for him.