Answer:
The 8 of us go forth and back to protect our king from a foes attack
I am expelled from you orally with a sound
I am an odd number. Take away a letter and I become even. What number am I?
I am a band that does not perform sing or act.
You write on me and secrets I can keep. In places never seen. I spin like a top. Though stiff as a board I'm often described like a mop.
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.