The system has changed in 3.x, but IIRC 3.0 was started before the buyout. Note that 2.0 was perfectly fine with allowing monstrous PCs, having a few supplemental rulebooks to cover them (as with 3.x).
There were a group of fensir (trollish creatures without the regeneration) that had been preying on the likestock of farmers. The babies were left over after defeating the adults.
My thri-kreen was outvoted in my initial plans for the babies, sadly. Then I missed the session that finalized the last Fensir encounter.
Alignment is still alive and kicking.