They're both Lucia. The one with white hair is the original. She was betrayed by her squad leader and her sister who is an ascendant found her. Her sister was also betrayed by humans so they seek to destroy Babylonia. The dark haired Lucia is a clone and every time she lost the fight against the original. Every time u saw the different dark haired lucias, those were upgraded versions of her. Its been 4 years real time since clone lucia got an upgrade. Original Lucia got new powers from the ascendant network which controls the Punishing virus
Ever heard of Altered Carbon? it's similar to that. Those frames are basically non-human but made with the likeness of an actual human with synthetic skin, etc. To be a construct, one must forgoes his/her human form. Basically digitizing your brain or mind and then such is installed in a frame. That's why you see the same characters looking quite different. That's probably the same mind but a different frame.
24:55 she was talking about a friend of hers named Selena. She went on a mission to save Selena but Selena got captured by an ascenant, thrown into the "red tide" and became corrupted. On a later mission, you end up fighting corrupted Selena and had but choice but to make up your mind to kill her but she was saved by an alien entity b4 u could kill her and the entity (named Ishmael) turned her into what is now known as a un that isn't affected by the "Punishing" virus
Every playable character in this game is 100% machine, the only human thing about them is their M.I.N.D. which is the only thing remaining from the time when they were still human. Also you picked the wrong videos starting from Imprisoned Sight because they changed the names of their videos. The "Teasers" are now named "Trailers" and the "PV" is the full length trailer. You could have been able to tell based on the video length.
the ratio... 100% machine, all they did was upload their human consciousness to the mechanical bodies and the finishing product is called a reconstructed solders or simply constructs the punishing virus is some otherworldly virus that atks the logic circuits of machines so A.Is cant be used to fight corrupted else they get infected and become corrupted too but in human it destroys their bodies while leaving the mind intact so it was decided to combine the two, a human mind and a machine body which is why its hard to tell how much of them is machine as the point is that their bodies needs to resemble and feel like their original human bodies as much as possible to the point they cant tell the difference because they need to remain conscious of being a human if they dont experience pain, if their bodies is too different, if they don't feel like themselves, if they become unsure of their humanity then their mind will become vulnerable to the punishing virus and make them no different then the corrupted they were made to fight
Yeah, wrong choice in videos to react to. PGR tends to drop people's jaws with specific characters doing no-damage boss fights, and the PVs and cinematics are kinda just news reports on what's coming/has already come to the game.