Udalamath, Rgr 5/Rog 13 (CR 18)
Udalamath: Male tiefling Rgr 5/Rog 13; CR 18; Medium-size outsider; HD 5d10+15 plus 13d6+39; hp 126; Init +11; Spd 30 ft.; AC 22, touch 16, flat-footed 22; Atk +18/+13/+8 melee (1d6+6/19-20, +2 human bane short sword) and +18/+13 melee (1d4+4 plus poison/17-20, +2 dagger of venom), or +18/+13/+8 melee (1d6+6/19-20, +2 human bane short sword) and +18/+13 melee (1d4+4/17-20, +2 unholy dagger), or +22/+17/+12 ranged (1d6+1/x3, +1 unholy composite shortbow); SA darkness, sneak attack +7d6; SQ crippling strike, evasion, favored enemies (humans +2, devils +1), outsider traits, resistances (cold 5, electricity 5, fire 5), traps, uncanny dodge (Dex bonus to AC, can't be flanked, +1 against traps); AL NE; SV Fort +11, Ref +16, Will +6; Str 18, Dex 25, Con 16, Int 14, Wis 13, Cha 10.
Skills and Feats: Balance +20, Bluff +15, Climb +8, Diplomacy +2, Escape Artist +19, Hide +43, Intimidate +19, Jump +8, Listen +22, Move Silently +28, Search +23, Tumble +28, Use Magic Device +10, Wilderness Lore +10; Combat Reflexes, Deformity (Gaunt), Improved Critical (dagger), Improved Initiative, Improved Two-Weapon Fighting, Skill Focus (Hide), Track, Weapon Finesse (dagger), Willing Deformity.
Crippling Strike (Ex): When Udalamath damages an opponent with a sneak attack, that character also takes 1 point of Strength damage. Ability points lost to damage return on their own at the rate of 1 point per day.
Darkness (Sp): Udalamath can use darkness once per day as the spell (caster level 5th).
Evasion (Ex): If exposed to any effect that normally allows a character to attempt a Reflex saving throw for half damage, Udalamath takes no damage with a successful saving throw.
Favored Enemies: Udalamath has selected humans and devils as favored enemies. He gains a +2 bonus on his Bluff, Listen, Sense Motive, Spot, and Wilderness Lore checks when using these skills against humans, and a +1 bonus on the same skills when using them against devils. He gets the same bonuses on weapon damage rolls against creatures of these types. He also gets the damage bonus with ranged weapons if the target is within 30 feet. The bonus doesn't apply to damage against creatures that are immune to critical hits.
Outsider Traits: Udalamath has darkvision (60-foot range). He cannot be raised or resurrected (though a wish or miracle spell can restore life).
Ranger Spells Prepared (1; save DC 11 + spell level): 1st -- pass without trace.
Possessions:+4 leather armor,+2 human bane short sword, +2dagger of venom, +2 unholy dagger, +1 unholy composite shortbow, twenty arrows, ring of chameleon power, water, traveler's outfit.
NOTE: The Willing Deformity and Deformity (Gaunt) feats are from the Book of Vile Darkness