Necropolitan, 5th-Level Human Wizard* (CR 5)

Medium Undead (Augmented Humanoid)
Alignment: Neutral
Initiative: +2 (Dex); Senses: darkvision 60 ft.

AC: 17 (+2 Dex, +4 mage armor, +1 deflection), touch 13, flat-footed 15
Hit Dice: 5d12 (32 hp)
Fort +1, Ref +3, Will +5
Speed: 30 ft.
Space: 5 ft./5 ft.
Base Attack +2; Grapple +1
Attack: Quarterstaff +1 melee
Full Attack: Quarterstaff +1 melee
Damage: Quarterstaff 1d6-1
Special Attacks/Actions: Spells
Abilities: Str 8, Dex 14, Con -, Int 16, Wis 13, Cha 12
Special Qualities: resist control, undead traits, unnatural resilience, +2 turn resistance
Feats: Brew Potion; Combat Casting; Magical Aptitude; Scribe Scroll
Skills: Concentration +8 (+12 casting defensively), Decipher Script +9, Knowledge (arcana) +11, Spellcraft +15, and Use Magic Device +5 (+9 using scrolls)
Advancement: By character class
Climate/Terrain: Any
Organization: Solitary, pair, or group (3-5)
Treasure: Standard

Source: Libris Mortis

This withered human has eyes so blue they are more accurately described as white, as if drained of color and life. The figure wears severe black clothing and clutches a thin wand in one gnarled hand.

Necropolitans are humanoids who renounce life and embrace undeath in a special ritual called the Ritual of Crucimigration.

A necropolitan's skin is dry, withered, and powdery. Its eyes are as pale as driven snow, and as lifeless. It continues to dress in the fashion it preferred while living. Necropolitans are considered citizens of the little-known city of Nocturnus, but if their nature is revealed elsewhere, they are feared and hunted like common monsters.

Augmented Subtype

A creature receives this subtype whenever something happens to change its original type. Some creatures (those with an inherited template) are born with this subtype; others acquire it when they take on an acquired template. The augmented subtype is always paired with the creature's original type. For example, a wizard's raven familiar is a magical beast (augmented animal). A creature with the augmented subtype usually has the traits of its current type, but the features of its original type. For example, a wizard's raven familiar has an animal's features and the traits of a magical beast.

This is a sample creature derived from a Template.