Initially born into a lower class, Rukia retains her modesty, even as an adopted member of the nobility. She is graceful and "clean", yet chooses to talk to ordinary people. However, her cool and lone demeanor often forces her to hide her personal troubles, even from her friends. Rukia is clueless about the ways of the modern Human World.She is very good at acting, having acted her way through a number of tough situations, such as getting out of trouble with school teachers and convincing the Kurosaki family to let her stay at their house. She has a tough exterior but has a soft gooey center that truly does care for those she holds dear. She likes to climb to high places and  likes everything rabbit-themed,and becomes quite sensitive when someone insults her obsession with them. People often have difficulty understanding her drawings, which are typically rabbit-like, and doesn't like it when people complain about their quality. Within the series she is often both the voice of reason as well as the comic relief.

Voice wise..If you can hit a spot on Michelle Ruff impression then more power to ya, and you also get bonus points..But I am not expecting anyone to do so.. Match the way Rukia looks and acts and you should be golden.

As the deuteragonist of the series this role is absolutely needed in order for it to get off the ground .. Episode 1 is litreally just banter between Ichigo and Rukia as an example.