Who is ururu?

hmmm... i guess she's a modified soul..cos like u said, she's really powerful. she fought with the arrancar and also with ichigo (when they were training him) just by using her bare hands..

Yeah, Ururu and Jinta are definitely very different. Like you said, she can single-handedly hurt an Arrancar. Renji, in his limitation bankai, couldn't put a scratch on the Arrancar. I believe Urahara created her and possibly Jinta as an experiment. They are powerful, unnaturally powerful. So with all hope, this will be explained by the end of the series.

i've always thought she was some type of robot, i mean - normal people prepare for battle, she goes into battle mode, and all her responses from then on sounds very programmed

hmmmm.... ururu the young girl?? i think she's a product of research bu Uruhara, the former captain of the research group in the soul society. what kind of modified soul?? thats the thing that i dont know...

As far as I could understand, it's a mod soul. The manga and anime showed the Urahara was a captain, and he was a scientist, something like the 12th captain does now. So probably he kinda of developed ururu. At least is what I think.

I was wondering this too. I kind of wondered if i missed some subtitles or something lol. It is freakish though how powerful she is and the fact that even the manga OR 40 something filler episodes of the anime dont explain anything.

if you read on Wikipedia, in the anime or manga its never specificlly mentioned who exactly they are. the most believeable case is that her and the boy are a sort of Mod Soul that Urahara created after he left soul society i mean, he made the undetecatable Gigai i'm sure he can make a bunch of other things.

I read somewhere that Jinta and Ururu are a kind of modsoul, but they are mod souls that cannot be put into another shinigami like Kon, Chappy, Rinrin, Cloud or Nova. Ururu was given the extreme strength during Urahara's testing but Jinta's abilities are still unconfirmed, I think that Jinta's abilities are going to be something to do with accuracy like he has super accuracy and that bat is gonna be some kind of Zanpakuto like Ichigo's he can't revert back to his Zanpakuto and thats what i think about Jinta's weapon