Vexgit

With a head like an angry crustacean, this fierce little insectoid creature clacks and rattles with a tiny but solid-looking hammer.
 

Vexgit (CR 1)

Tiny Fey
Alignment: Lawful Evil
Initiative: +1
Senses: Darkvision 120 feet, Low-Light Vision; Perception +5
  Speed: 20 feet, Climb 20 feet
Space: 2-1/2 feet
 

Defense

Armor Class: 15, touch 13, flat-footed 14 (+1 Dex, +2 natural, +2 size)
Hit Points: 8 (1d6+5)
Saving Throws: Fort +2, Ref +3, Will +3
Damage Reduction: 5/cold iron
Spell Resistance: 12
 

Offense

Melee: warhammer +0 (1d4-2/x3), bite -2 (1d3-2)
Reach: 0 feet
  Special Attacks: speedy sabotage, wrecking crew
  Spell-Like Abilities (CL 1st; Concentration +1):

Statistics

StrDexConIntWisCha
6 (-2) 13 (+1) 14 (+2) 12 (+1) 13 (+1) 11 (+0)
Base Attack Bonus: +0
CMB -1
CMD 7
  Feats: Skill Focus (Disable Device), Toughness, Weapon Finesse
  Skills: Appraise +2, Climb +13, Craft (traps) +5, Disable Device +9, Knowledge (engineering) +2, Perception +5, Stealth +13 (+17 in metal or stony areas, +9 when moving) Languages: Undercommon
 

Special Abilities

Speedy Sabotage (Su)

Vexgits are adept at disassembling machinery, reducing even complex devices to trash with shocking speed. When using the Disable Device skill, these gremlins treat all devices as being one category simpler for the purposes of determining how long it takes to use the skill. Thus, difficult devices count as tricky, tricky devices count as simple, and simple devices can be dismantled as a free action.

Wrecking Crew (Su)

A group of up to six vexgits can work together to dismantle a device. This ability functions like the aid another action, but a single vexgit can receive help from up to five other vexgits, granting it up to a +10 bonus on its Disable Device check.
 

Ecology

Environment: Any Underground or Urban
Organization: solitary, pair, mob (3-12), or infestation (13-20 with 1-3 sorcerers of 1st-3rd level, 1 rogue leader of 2nd-4th level, 2-14 trained dire rats, 2-5 trained venomous snakes, and 1-3 rat swarms)
Treasure: standard (warhammer, other treasure)

  Maniacally destructive little brutes, vexgits delight in scrapping and sabotaging the works of larger races. The larger and more complicated the target, the better. While one of these spiteful gremlins might delight in trapping someone behind a door with a jammed lock, loosening the wheels on a carriage, or sneakily removing all the nails from a small boat, it's when groups of vexgits get together that they're truly dangerous.
  In such instances, the portcullis of a vexgit-infested gatehouse turns into a deadly weapon, while a clock tower becomes an avalanche of gears waiting to topple. Engineers warn apprentices of masterful constructions destroyed by these unruly gremlins, with many blaming their greatest failures on such tiny saboteurs.
  Like most gremlins, vexgits prefer to live underground, but cities and the devices they find there fascinate them, often drawing mobs of the dangerous fey to sewer tunnels and abandoned warehouses. Vexgits stand 1-1/2 feet tall and weigh approximately 16 pounds.