Nintōjō

The Nintoujou (人頭杖, lit. "Human Head Cane"), also known as The Staff of Two Heads in the english version is the "weapon" Jaken uses.

Appearance
It looks like the name it was given. On half of the top of the staff, sits the head of an old man, and on the other sits the head of a once-beautiful woman. Although, it seems the beautiful woman is more of an old woman with silky black hair. It is taller than Jaken himself.

Abilities
The Nintoujou doesn't have many abilities. The old man head can spit fire on cue by Jaken. When close to the grave of Sesshomaru and Inuyasha's father, the old man's head laughs. But when at the wrong place, the beautiful woman's shrieks.