Answer:
Weight in my belly, Trees on my back, I travel fast in my place, but feet is a feature I lack
What's a place you have left but didn't enter?
What gets closer when you blink?
Round as an apple, deep as a cup, and all the kings' horses can't fill it up. What is it?
What can be heard and caught but never seen?
Special abilities and brightly colored underwear are all you need to be one of these.