Defeating the winged menace isn't as easy as simple as pitting one of those Poké-types against it, and Giovanni also has a bunch of other Pokémon that you're going to need to get through as well.

He will always kick off the battle with his bread and butter: a beefed-up Persian. It's a normal Pokémon, so fighting type moves, like Machamp with Counter and Dynamic Punch, or Lucario with Power-Up Punch and Counter should do the trick.

Giovanni's second Pokémon will be either one of three monsters: Nidoking, Rhyperior, or Kingler.

Kingler's a water-based Pokémon, so zapping that fool with some electricity or hitting him with some grass moves will work really well: Thunder Shock, Thunder Bolt, Wild Charge, Grass Knot, or Razor Leaf will put the hurting on that big crab.

For Rhyperior, you can use fighting type moves (see above), Grass (see above) or Ice techniques: Ice Shard and Avalanche should do the trick.

After defeating these two nerds, you'll go up against Giovanni's Lugia and you'll want to use moves like Volt Switch and Wild Charge, Powder Snow and Ice Punch, Smack Down and Stone Edge, or Rock Slide.