Extraterrestial masters of the Sandmen, the Etoiles are masses of electronic cables from outer space.  Creatures made entirely from technology and cables, the Etoile are perhaps the most interesting creature presented in the Darkmatter book.  More information on them can be found there.

Etoile
Large Aberration
Hit Dice: 6d8+6 (38 hp)
Initiative: +5
Speed: 40 ft.
AC: 21 (+8 Natural, +3 Dexterity)
Attacks: Needles +7/+5 melee; Electronic Shock +2 melee
Damage: Needles 1d8-2; Electronic Shock 1d8-2 +2d6 electrical damage
Face/Reach: 10 ft. by 10 ft.
Special Attacks: Light Field, Shock
Special Qualities: Darkvision, Electronic Empathy, Inhuman Immunities 
Saves: Fort +0, Ref +5, Will +7
Abilities: Str 7, Dex 17 , Con 12, Int 16, Wis 15, Cha 10
Feats: Dodge, Mobility, Weapon Finesse(Needles)
Skills (ranks only): Climb +8, Electronics +5, Jump +6, Move Silently +4, Spot +5, Use Computers +4

Special Attacks:
Light Field: Etoiles can release a burst of light, lasting for 5 rounds, providing 9/10 concealment for anyone who is attacked by anyone else but th etoile.
Electronic Shock: can generate shock between two needle points to do extra electrical damage. 

Special Qualities:
Darkvision: can see perfectly in the dark up to 60'.
Electronic Empathy: gains +5 to Use Computer skill checks, +3 to Electronics skill checks.  Can fuse with any computer system, taking control of it, with a Use Computer or a Use Electronics check.  Fused characters cannot take any actions but to control the item they are fused with.
Inhuman Immunities: as a non-organic creature, Sandmen are immune to poison and disease.