Answer:
Looks like a hippo crossed with a unicorn.
Face with a tree, skin like the sea. A great beast I am. Yet vermin frightens me.
I have a mane like a horse but stripes like a zebra. What am I?
Attracted by light but flies at night. It's wind and hairy but not too scary. What is it?
Black and scary, small and hairy. In the night you hear it preach, Through its noisy high pitched screech.
They are many and one, they wave and they drum, Used to cover a state, they go with you everywhere.