Somehow I feel like he is a yokai in disguise. Sucks Naraku made things many times more complicated with who is working with him and hiding stuff.
Kanna and baby: Ability to hide presence not act
Hakudoshi: Atm Naraku's right hand man who personally takes most orders from and use whatever means to accomplish it.
Kagura: Obviously traitor of their group, Naraku and others constantly uses her as bait
Kohaku: Following Naraku's order, but is attempting to show loyalty to kill the baby and end it once and for all.