Answer:
I can generate fear and some say I come out of your ears. I am as quiet as a mouse but not welcomed in the house.
The 8 of us go forth and not back to protect our king from a foe's attack. What am I?
I am what one cannot keep, two cannot hold, and three cannot destroy. What am I?
The more of this there is the less you see. What is it?
I am enjoyed by some, despised by others. Some take me for granted, some treasure me like a gift. I last forever, unless you break me first. What am I?
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.