Answer:
Come up and we go, Go down and we stay.
I am someone you don't know. Who am i?
I call the trees my home, yet I never go inside, and if I ever fall off the tree I will be surely be dead.
Take one royal word in the plural and make it singular by adding one letter
What travels around the world without leaving the corner?
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?