Updated 2015-08-31 (NOTE DATE! This was updated after a play-test that found a few broken things about adding Movement to Strength for attacks. This has been fixed.)
The Flyer is a set of Movement Powers for any character that gets around by flying through the air. The character might have wings, a jet-pack, powered armor, be able to change into a beam of energy or be a gravity defying extra-terrestrial. If they move by flying, then they have levels in Flight.
Comic book examples are Hawkman, Iron Man, Storm, Gravity, The Human Torch, Superman. Note how differently each of these characters manifests their flight powers.
Download the complete Power-Set here: Power-Flight