- Goblinoids eat people or other goblinoids.
These two facts are pretty much the limit of goblinoid biology. There are male and female goblinoids, based on the sex of the child kidnapped to create a new goblinoid, but they seem unaware of rtheir own gender.
- Goblinoids have no culture.
If observed without their knowledge, their main entertainment seems to be poking, clubbing, or stabbing things, repeatedly, without a plan. Sometimes they do mock versions of human activities (weddings, funerals, trials, festivals, parades, church services.) The bride, corpse, judge, priest, or king is usually a random object. The goblins will pick one word and shout it over and over during the ceremony.
- Goblinoids have no society.
There are rumors of weird exceptions, some of which seems to be aimed specifically to spread chaos in human society rather than to fulfill some necessary goblin need. The goblins don't have a market because they want to trade, but because they like to watch what happens when humans use goblin creations.
- Goblinoids have no industry.
Goblinoids don't normally farm or herd animals, although they may twist vegetation or wildlife for their own entertainment.
- Goblinoids are sick.
If goblinoids are chasing or stalking a weak, unarmed opponent and either outnumber their victim or the victim is alone, a 5+ on 1d6 means a goblinoid goes into a frenzy, sort of like going berserk, except that the target is random and may be the goblinoid itself. A goblin may suddenly laugh and chop off its own hand, or bash its head against a wall.
- Goblinoids are twisted.