There used to be several threads of this on the WotC d20 Modern boards. I still have my posts saved to file, so here goes:
Fox Moreau
A blend of human and red fox genes, these moreaus were first developed in Japan. Smaller than your average human, fox moreaus are extremely adept at covert operations. They were designed for penetrating secure locations and then slipping away without being detected, a natural trait the fox is renowned for. However, they are much physically weaker than your average soldier, making them less effective in close-quarters combat.
Much to their surprise, the Japanese genetic researchers succeeded beyond their wildest dreams. Though the fox moreau was inspired by the mischevious kitsune of legend, these genetic creations proved to be much closer to their fairy-tale cousins than anyone could have predicted.
Overt fox moreaus have canine muzzles and ears. Orange-red fur covers their bodies, with the exception of white fur under their throat and chest, plus black 'socks' of fur on their hands and feet. Reports of a joint American/Canadian venture experimenting with arctic foxes, and Israeli desert fox variants, have remained unconfirmed.
Scent (Ex): Fox moreaus can detect approaching enemies, sniff out hidden foes and track by sense of smell.
This special quality allows a creature to detect approaching enemies, sniff out hidden foes, and track by sense of smell. Creatures with the scent ability can identify familiar odors just as humans do familiar sights.
The creature can detect opponents within 30 feet by sense of smell. If the opponent is upwind, the range increases to 60 feet; if downwind, it drops to 15 feet. Strong scents, such as smoke or rotting garbage, can be detected at twice the ranges noted above. Overpowering scents, such as skunk musk or troglodyte stench, can be detected at triple normal range.
When a creature detects a scent, the exact location of the source is not revealed—only its presence somewhere within range. The creature can take a move action to note the direction of the scent.
Whenever the creature comes within 5 feet of the source, the creature pinpoints the source’s location.
A creature with the Track feat and the scent ability can follow tracks by smell, making a Wisdom (or Survival) check to find or follow a track. The typical DC for a fresh trail is 10 (no matter what kind of surface holds the scent). This DC increases or decreases depending on how strong the quarry’s odor is, the number of creatures, and the age of the trail. For each hour that the trail is cold, the DC increases by 2. The ability otherwise follows the rules for the Track feat. Creatures tracking by scent ignore the effects of surface conditions and poor visibility.
NOTE: Depending on the FX level in your campaign, the fox moreau gains additional racial abilities. For non-FX campaigns, they are simply more agile than one would expect from a humanoid creature. In FX campaigns, however, something about the fox moreau's genetic makeup has tapped into a natural magical or psionic ability inherent to their species, similar to those of the legendary kitsune. This may be a hook for an entire campaign, to determine whether the ancient stories carried a ring of truth...
Genetech (or other non-FX campaigns)
Evasion (Ex): A fox moreau can avoid even magical and unusual attacks with great agility. If he makes a successful Reflex saving throw against an attack that normally deals half damage on a successful save, he instead takes no damage. Evasion can only be used when wearing light armor or no armor. This evasion ability counts for the purpose of meeting the prerequisites on the Fast hero's defensive talent tree.
Shadow Chasers/Urban Arcana (or other magic-FX campaigns)
Change Self (Sp): Once per day, as an attack action, a fox moreau can use change self as the spell cast by a 3rd level Mage.
Agents of P.S.I. (or other psi-FX campaigns)
Charm Person (Sp): Once per day, as an attack action, a fox moreau can use charm person as the power manifested by a 1st level Telepath.
Ability Scores: Fox moreaus have the following species modifiers to ability scores:
Covert: +2 Dex, -2 Con
Moderate: +2 Dex, -2 Con, -2 Int, +2 Wis
Overt: +4 Dex, -4 Con, -2 Int, +2 Wis
Variants:
For optional variants, replace the Scent ability with the appropriate energy resistance. For instance, arctic fox moreaus lose Scent but gain Cold Resistance 5, making them better suited for cold-weather missions.
