Fauna Yasenha wrote:
also, a good question to how he possesses a shikai, and this was due to the fact that his zanpakuto was "grown" with him, connected to him, allowing for the zanpakuto to forge properly. Besides, Oleg would want him to be that strong and would have designed him acordingly. I doubt when Mayuri created Nemu, he would have wanted her to be strong enough to take on the lieutenant's role, not make her weaker then he needed her to be.

Besides, there hasn't been a lieutenant of squad twelve, there was never one to begin with, which is why Oleg got fed up with having no lieutenant to help him and decided that he should make his own, it's in the alt plot guide that's what happens.

Fauna Yasenha wrote:
2. Well, normally it would go into strengths, but NPC don't have that, so I include it all within the personality sections ^^; The rest I'll try to work on, but I would like your opinion on this too, as to what Oleg programmed into his head; that would be Oleg's knowledge of various sciences like biological science, the anatomy of living things as well as Oleg technological brillance, allowing him to be as good as a scientist and mechanic as Oleg. This along with the advanced growth rate which allows him to rapidly grow both as a person as well as a fighter, despite having only been born, allows him to have near enough unlimited potential to learn and evolve. of course, I can take suggestions on what else can be programmed into his mind, one thing is possibly using the command phases from bioshock and use them here, here's a example of what they would do within the context of Takumi:

First command: "Would you Kindly?" or WYK for short, whenever Oleg (no one else but Oleg) uses this command along with what he wishes, Takumi would automatically obey him, regardless of what he wanted or wished to do, his body would obey Oleg.

Second command: "Cold Yellow" a variation of code: Yellow, this is a failsafe in case Takumi was either compromised or defied a order Oleg felt was more important to both the soul society or his own twisted research, speaking this within earshot of Takumi (by Oleg alone) causes Takumi's heart to slowly stop beating over the period of seven posts, gently weakening him until he has a heart attack and passes out, Then by speaking the phrase "Hot Red", This causes Takumi to enter a state where he is kept in a unconscious state, but appears to wake and stand up, his blue eyes would appearly cloud as he isn't conscious, but will follow Oleg's every order without knowing he is. Of course, Oleg has a antidote to this, locked in his captain's quarters. Of course, Oleg can stop him during the stages of Cold Yellow by snapping his fingers, causing the effects of Cold Yellow to stop unless spoken again, same with Hot Red.

3. Now, this is something else I took from bioshock; Oleg built his body to appear to be a young adult human (21) then designed the artificial soul to act his age, so to speak, similar to in bioshock, the main character is artificially "aged" to grow from a baby to a adult within the span of a few days. Of course, since this is bleach and Oleg has much more advanced tech and smarts, he could do this as he built the gigai for his new lieutenant. You do have to think of Takumi as a mod soul within a soul reaper's body; Like Nemu or the twin mod souls from the gotei 13 invasion arc, that both possessed zanpakutos and shinigami powers. Besides, since watching the lastest avenger film with the vision giving the line "Well, I was only born yesterday", I really wanted to have a character who is the only one in the entire bleach universe who could say that line <3 and yes, in a way, I'm borrowing from the vision's birth from the film as well as how he was created, alongside how the mod soul twins were created during the aforementioned arc.