Despite the many menacing characters found in BioShock, not the least of which is the Big Daddy, the creepiest character revealed so far is undoubtedly the Little Sister. These little "girls" run around the underwater world of Rapture collecting something called Adam from the dead (note the large syringe in the image at right. The player can decide to save these "children" or to harvest them, as the Adam they carry is useful to the player. In the latest BioShock podcast, Ken Levine, creative director of Irrational Games, discusses the moral conflict that the developers have created in the Little Sister character.

The whole podcast is just shy of 20 minutes, and is exclusively about the Little Sister. Given the appearance and demeanor of the Little Sister character, the moral choice presented by her is likely to become a touchy subject, and the podcast attempts to clear the air about it. Levine discusses the challenges of creating such a character (originally designed as an insect) and forcing the player to make a moral choice about it. Among the juicier bits of info revealed in the podcast is the fact that players cannot physically harm the Little Sister. Little Sisters can be "harvested," but cannot be harmed by weapons or powers that the player possesses. It is made clear that harvesting will result in the death of a Little Sister, though Levine doesn't discuss specific details. The podcast is definitely worth a listen. If you've got the time to spare, we suggest you check it out.