Answer:
I have six faces but not even one body connected, 21 eyes in total but cannot see. What am I?
Two bodies have I, though both joined in one. The more I stand still the faster I run. What am I?
I get paid to shoot people then blow them up.
I am needed for most animals and hardcover books. What am I?
Keep doing me to avoid lens dryness
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.