In need of rig troubleshooting help

Hello there, I’m in need of some help trouble shooting my minecraft rig. I’ve been working on it for some time now and whenever I rotate the head bone in pose mode it deforms I was wondering if anyone could help. I included a download link to the rig if you’d like to see it for yourself.

Thanks in advance,
BoStaff

I take it that you parented the bone to the mesh object number of times. The head and body object have more that one Armature modifier on it.

Clean the model first; unparent it, erase Armature modifier, erase all Vertex group of all objects. Then try parenting them again.