Answer:
What has a head and a tail, but no body or legs?
My teeth are sharp my back is straight to cut things up it is my fate.
I am a type of weapon for SCI-FI characters
What has a face and two hands but no arms or legs?
I can be cracked made told and played. What am I?
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.