Originally posted by: Death13a
Seth is kurznik 03 ( just rewatched the scene) Abel is 02, Cain is 01 and And last one with no name is 04 (probably) or prototype if so then she was build first then cain and abel and last seth
From what I remember reading a while ago, some speculations said that 04 was Lilith:
http://en.wikipedia.org/wiki/Lilith


Anyways, just finished watching the series also, Abel looks very badass in the last scene... I was hoping for Abel and Esther to have a final conversation before the series ended...

Another season is a must... They shouldn't have introduced Cain if they weren't planning on it.

Edit:

Other things of interest.

The author of Trinity Blood died on 2004 when the anime was announced. She didn't finish the story in the novels, though it seems someone else was asked to finish it for her.

http://en.wikipedia.org/wiki/Trinity_Blood_(novel)