Answer:
kings and queens may cling to power and the jesters may have their call. I am the most common but I can rule them all.
I am a protector. I sit on a bridge. One person can see right through me, while others wonder what I hide. What am I?
My first is second in line; I send shivers up your spine; not quite shining bright I glitter in the light.
At night I come without being fetched, and by day I am lost without being stolen. What am I?
I am not very commonly found! Only in some rainforest! I have an odd number of toes! I'm very lazy and hang upside down! What am I?
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?