Gale Wings-getting guys:
Gallade (Aerial Ace)
Garchomp (Aerial Ace)
Genesect (Aerial Ace, Fly)
Giratina (Aerial Ace, Fly)
Gliscor (Acrobatics, Roost, Aerial Ace, Wing Attack, Tailwind)
Gogoat (Aerial Ace, by level up (???))
Golduck (Aerial Ace)
Golurk (Fly, of course)
Greninja (Acrobatics...