This special entertainer is called "DeVine."
She wears a costume that does an excellent job of camouflaging her, and combined with slow movements, she blends into the jungle background.
Many times I have walked past without realizing that she was there.
The costume also includes stilts which adds to the vine-like look.
The next time that you are at Disney World's Animal Kingdom, be on the look out for DeVine. She does not show up on the entertainment schedule. She is just an extra bit of Disney magic that you will want to try to see. You'll just have to look real closely.