Stabby       CR 5
Male? Warforged Rogue 5
Any Evil Medium Construct (Living Construct)
Init +3; Senses Listen +8, Spot +8
Languages Common

AC 19, touch 13, flat-footed 16 (+6 Armor, +3 Dex)
hp 28 (5D6+10);
Resist Living Construct Immunities, Evasion, Light Fortification;
Fort +3, Ref +7, Will +1
Weakness Living Construct Vulnerabilities

Spd 30 ft. (6 squares)
Melee Rapier +7 (1D6+3/18-20x2)
Ranged Thrown Dagger +6 (1D4+2/19-20x2)
Base Atk +3; Grp +5
Space 5 ft.; Reach 5 ft.
Atk Options Sneak Attack +3D6
Combat Gear Potions: Bull's Strength, Shield of Faith +3, Repair Light Damage, Repair Moderate Damage
Special Actions Tumble +9

Abilities Str 14, Dex 16, Con 15, Int 10, Wis 10, Cha 6
SQ Living Construct Traits, Trap finding, Trap Sense +1
Feats Mithril Body, Weapon Focus:Rapier
Skills Gather Information +6, Hide +9, Listen+8, Move Silently +9, Open Lock +11, Search +8, Spot +8, Tumble +9
Possessions Combat Gear, +1 Rapier, +1 Body Enhancement, Dagger x5, 20GP

DM Notes
"Stabby" is a typical evil minion of "The Lord of Blades" or any other similar BBEG that might be found in your campaign. He can easily be either a Spy or an Assassin type without changing a thing, stat-wise.