Grimweird (CR 11)

Medium Undead
Alignment: Always lawful evil
Initiative: +1 (Dex); Senses: darkvision 60 ft. and low-light vision
Languages: usually Common

AC: 20 (+1 Dex, +5 defection, +4 natural), touch 16, flat-footed 19
Hit Dice: 12d12 (78 hp)
Fort +9, Ref +10, Will +16
Speed: 20 ft.
Space: 5 ft./5 ft.
Base Attack +6; Grapple +3
Attack: Claw +3 melee
Full Attack: 2 claws +3 melee
Damage: Claw 1d4-3 plus energy drain
Special Attacks/Actions: Energy drain, spell-like abilities
Abilities: Str 4, Dex 13, Con -, Int 18, Wis 17, Cha 20
Special Qualities: undead traits, unholy grace
Feats: Augment Summoning; Combat Casting; Negotiator; Persuasive; Spell Focus (conjuration)
Skills: Bluff +19, Concentration +19 (+23 when casting defensively), Diplomacy +25, Gather Information +17, Handle Animal +14, Intimidate +21, Knowledge (arcana) +18, Knowledge (the planes) +18, Sense Motive +14, and Spellcraft +18
Advancement: By character class
Climate/Terrain: Any
Organization: Solitary plus 1 monster from the summon monster VI list
Treasure: Double standard

Source: Monster Manual III

This withered, aged human crackles with dark light - light that seems to be holding him together. His bones seem to have shrunk, like the muscles can't hold them up.

Grimweirds are weak, withered, paranoid former humanoids who have tapped into the energy of the Negative Energy Plane. They wield this energy to summon guards - raising the spirits of hell if necessary - for their frail, barely animated bodies.

A grimweird is never alone. When encountered, it will have already summoned at least one monster. A grimweird never rests, so it is always able to devote its energy to summoning an ally. It is these constant demands that make grimweirds reviled on planes from which monsters are summoned.

Despite this, grimweirds are some of the most charismatic beings in existence. They bluff, cajole, threaten, and blackmail beings of all types into getting them items and information they need.

A grimweird is a foot or so shorter than the human it once was, its muscles and sinews withered by exposure to negative energy. It weighs less than 100 pounds. It speaks the languages it did in life, though it may have learned quite a few more to communicate with its thralls.