I guard what’s precious, Whether beating or buried. What am I?

Open my mouth, and you will see, I hide your socks and your shirts for free. I stand in your room, yet I never roam, and keep your outfits safe at home.

I shine up your smile but I’m not a mop, I tickle your chompers, then tell you don’t stop! I wear silly foam like a snowy white beard, morning and night, I magically appear.

Four soldiers and captain, Spoiling to fight, Mustered together, In formation tight

Without my last, I am a gesture of gratitude and respect. Without my first, I am a nighttime hunter, as you might expect. As a whole, I am often used as a breakfast object.