Aerodactyl in Cliff’s lineup is best beaten with Rock, Steel, Water, Electric, or Ice attackers, with strong Rock and Steel picks usually giving the cleanest results against it.

Quick picks

  • Metagross with Meteor Mash if you have it.
  • Rhyperior or other strong Rock attackers.
  • Kyogre , Gyarados , or other strong Water attackers.
  • Magnezone or other Electric attackers.

Simple battle plan

  1. Lead with a fast energy-building attacker.
  2. Burn Cliff’s shields with charged moves.
  3. Swap to your hardest-hitting counter once shields are gone.
  4. Avoid relying on Ground or Normal attackers, since Aerodactyl resists those.

If you want the easiest answer

Use Metagross , Rhyperior , or Kyogre if you have them. Those are the most commonly recommended answers for Cliff’s Aerodactyl.

If you want, I can also give you a full Cliff team counter lineup based on what Pokémon you have.