- They're neither Abnormalities nor monsters. If I had to put a label on them, I'd say they're closest to Distortions, but that's a tenuous connect at best. The LCD Team Leader Moses also said they're fundamentally different beings, so... yeah, probably not.
- All Bloodfiends possess red eyes. But it's not the easiest method of distinguishing them from humans, as it's also the most common color for ocular combat augmentations. And it'd be entirely useless if they replaced their entire head with a prosthetic like I did.
- They have strong regenerative capabilities, so it's extremely hard to kill them if they have enough blood to consume. One way to stop them from regenerating, though, is to crush their heads... We had a hell of a time aboard the WARP train, thanks to the train's environmental uniqueness that sorta made that a non-option for us.
- The head really seems to be the core element in making these 'regeneration' methods work. The head had to be intact for Life Insurance to work, K Corp.'s ampules to work, so on and so forth. ... Well, the brain, to be specific.
- They all have an overpowering desire for blood. Bloodfiends of La Manchaland seemed to have tried consuming Hemobars with artificial or animal blood additives as a substitute, but... looks like only flowing blood can really sate their hunger and deprivation.
- They could overcome it if the urge itself is forgotten, but... finding the waters of the river Lethe, which serves that exact function, doesn't seem to be the easiest task. Where in the world did the Fixer from Don Quixote's memories, Bari, find such a thing?
- Alongside this desire for blood, they also seem to have strong feelings to propagate their 'Family' as well. Seems like... 'Sancho' was the odd one out for not creating a Family of her own. Kindred generations are distinguished by their separation from the First Kindred, and once embraced as a part of the Family, they begin to really care about and treat each other like, well... family.
- Rocinante disguises Don Quixote's more obvious Bloodfiend features and partially suppresses her bloodthirst. But there's still much we don't know about Rocinante—like how it works, or if it has anything to do with the body of 'Don Quixote' still at P Corp....
- But it still can't fully suppress her natural instincts, like the desire for blood and propagation of her Family, so Don Quixote's been enduring it all with her sheer willpower. Makes me wonder, though... what's so different about our Don Quixote and the First Kindred Don Quixote that they have such strong resilience against bloodthirst compared to the other Bloodfiends?
- Limbus Company headquarters has been sending Don Quixote a steady supply of high-quality blood packs. When I asked why they couldn't have just done the same thing at La Manchaland, she replied that it was simply an issue of demand vastly outweighing the supply—there were simply too many Bloodfiends to feed compared to the amount of blood they could draw from willing visitors. Which is precisely the reason they had to develop Hemobars to meet the demand with as little blood as possible. Besides... I have a feeling that it probably wouldn't have worked out anyway... even if they had enough blood packs...