Lao Jiu

Lao Jiu is Litchi Faye-Ling's pet panda and one of her main sources of power.

History.
Nothing much is known about Lao Jiu's past before he was found by Litchi near the boundary. But it is known that the Panda species is incredibly rare in the BlazBlue universe, rarer than present day Panda's (Although this could, most likely, be because of the damage the Black Beast wrought on the world).

After being found by Litchi, who kept him because she believed him to be simply adorable, the two became practicaly inseperatble, with Lao Jiu always at Litchi's side (or her hair to be more precise). Throughout Continuum Shift, Kokonoe, Iron Tager and Arakune are constantly looking out for Litchi because of her power that streams from Lao Jiu's connection with the boundary.

Powers.
Lao Jiu could possibly be one of the more powerful beings in the BlazBlue universe due to the fact that he can stream the power of the Boundary, although at this point it is unknown if he can use it for his own needs (assuming a Panda has needs), without the need of a grimoure and yet still retain all physical characteristics and intelligence, unlike Arakune.

However the streaming of the power comes at a cost for those who choose to use the power; As Litchi herself is beggining to deteriate just as Arakune did. Wether Lao Jiu is aware he is slowly, but unintentionanally, killing his owner is unknown at this point.