Answer:
I travel in a gaggle.
The eight of us go forth not back to protect our king from a foe's attack. What are we?
Some try to hide, some try to cheat, but time will show we always will meet.
When I live I cry if you don't kill me I'll die.
I am lighter than air but a hundred people cannot lift me. Careful! I am fragile!
The answer I give is yes, but what I mean is no. What was the question?
What am I?
Animal
Difficult
Easy
Food
Funny
Kids
Logic