The sserikon are not truly a race, for they do not breed true. Rather, they're the result of a yuan-ti throwback gene. Essentially, whatever snakelike blood in the human gene pool created the first yuan-ti still exists, but in a much more diluted form. The sserikon are the result of this throwback gene, and perhaps a thousand are born every year, with maybe a couple hundred surviving infanticide. They grow up on the fringes of society, living in the gutters and feeding off the homeless.
Most sserikon are malicious, forceful, and very sneaky, but above all they are practical. Most, save for the most vindictive, won't kill you because they are evil. They'll kill you for your clothes or your food, your weapons or your torches. If they actually engage in a social situation sserikon can be surprisingly, for lack of a better word, dapper. Engaging.
Sserikon are much too snakelike to pass off as humans without a serious disguise. Although their skin is typically skin colored their eyes are slitted like a snakes and they have patchy scales across their bodies. Most also have forked tongues, and all share the same large serpentine fangs.
The yuan-ti throwback gene that creates sserikon occurs only in humans, which ironically means sserikon have the worst relationships with humans out of all of the races. This is because sserikon are so universally rejected, not even recognized as a race (technically, they aren't). The yuan-ti usually don't pay attention to their "inferior" relatives, but a few sserikon have abandoned their lives to serve renegade yuan-ti (anathemas).
Most sserikon are neutral evil. They will kill without qualms, and they don't have a particular code or anything resembling personal honor, but they don't rampage endlessly. A few neutral sserikon, treated relatively well by society, do exist, although good ones are all but unheard of.
Sserikon grow up in human lands, and generally will live in the ghettoes and rooftops of large cities. They don't have their own lands, but since no more than a dozen sserion tend to gather at one time (since they can't create families) this is hardly an issue.
Sserikon will usually worship cult gods of the city they're in, although a few have turned their gaze upwards to gods like Hextor who they think will give them the strength to fight their way out of their position in society.
Sserikon adventure because they have no place in the normal, human cities they live in. They're throwbacks from another world, and adventuring helps them get back in touch with this world.
Sserikon Racial Traits
+2 Dexterity, -2 Constitution. Sserikon move like snakes, but have relatively frail builds.
Medium. As medium creatures sserikon have no special bonuses or penalty related to size.
Base Land Speed is 30 feet.
Sserikon have the reptilian subtype.
Bite: A sserikon has a natural bite attack that deals 1d6 points of damage. It also transmits sserikon venom (see below) if a hit is inflicted.
Injury, DC (10 + 1/2 sserikon's HD + Constitution modifier), Initial Damage 1d4 Dex, Secondary damage Paralysis for a number of rounds equal to 1/2 the sserikon's HD (minimum 1). This venom cannot be used for weapons unless the sserikon it was extracted from had the Concentrated Venom feat (see blow).
Sserikon have a +2 racial bonus on all Bluff and Intimidate checks.
Favored Class: Rogue (feel free to switch this out for any of the many Assassin base classes published by 3rd party entities. Otherwise, almost all NPC sserikon rogues will take levels as an assassin as soon as possible).