Answer:
Small and bearded, both in the real world and in stories.
Material for making balls and men that only shows up at certain times of the year.
Feared on the playground, he steals your lunch money and distributes wedgies
What is really easy to get into but really hard to get out of
He prefers to travel on vines and pal around with gorillas.
I have a few points but we're not competing. I'll help you win when you're eating. What am I?