Answer:
Bold are the first; true are the second; playful are the third; clever are the fourth; forceful are the fifth.
Two in a whole and four in a pair. And six in a trio you see. And eight's a quartet but what you must get. Is the name that fits just one of me?
Round as a button, deep as a well. If you want me to talk, you must first pull my tail.
All about, but cannot be seen, Can be captured, cannot be held, No throat, but can be heard. Who am I?
Not born, but from a Mother's body drawn. I hang until half of me is gone. I sleep in a cave until I grow old. Then valued for my hardened gold.
If it’s information you seek, come and see me. If it’s pairs of letters you need, I have consecutively three. What am I?