Centipedes. Yes that's right, centipedes are the new spiders. Sort of.
|Aaaargh! Run for your lives!|
One of the themes of the setting is that there are no "True Gods" necessarily. There are an almost limitless number of gods worshipped, some are real beings or creatures and others simply idols or fictional ideas. Either way, there is not much in the way of confirmation, only faith. However, I digress slightly.
Cultists of the Centipede God would carry out blasphemous rites using the four listed types of giant centipede in the S&W monsters chapter; cast centipede related spells; be obsessed with the number 100 and look with awe upon the blessed sons of their god, the centauripedes.
Basically a hybrid with the torso of a man and but the head and segmented body of a centipede. Characterised by ferocity and terrifying speed, the centauripede is a dangerous foe similar to an ogre in strength but with a poisonous "bite" from its forcipules. It usually causes d10 weapon damage by whatever it's wielding in its human arms due to the swiftness and power of its strikes.
Hit Dice: 4+1
Armor Class: 5 
Attacks: Weapon (d10), Bite (d8+poison)
Saving Throw: 13
Special: Lethal poison, +4 save
Challenge Level/XP: 6/400