Probably Naruto. While I'm not a big fan of him as a character, I do see that he's not a bad guy personality wise. And thinking about everything he's done for Sasuke, yeah, that's definitely someone I'd like to have as a brother for example.
Pain, So i can carry out his family tree. This is because pain died too young i feel like personally this was off putting but on the other hand there had to be a leader for the six paths so yea...