Owl

Owls are number 5 on Mega Sonic Bros: The Soul of Dracula. They fly in almost perfect silence thanks to flapping less, using their stiff, comb-like fringe along the edge to reduce noise, serrated edge on the back and the downy covering making the wings very soft.

If following the countdown of extreme Inventors, the next contender has helped us create an invention that slides us smoothly through water.