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GuidePublished March 24, 2026Updated March 24, 20262 min read

How to Get Onix in Pokemon Pokopia

Step-by-step walkthrough for the Yawn Up A Storm quest. How to get Slowpoke, raise humidity, trigger rain, free Onix, and build the Smooth Tall Grass habitat.

At a glance

Action-focused strategy coverage with direct links back into the tracker and planners.

Structure

3 jump points across the article.

ProgressionWithered Wastelands

Onix is one of the most important early progression Pokemon in Pokopia because it brings Bulldoze and Crush. Getting it requires finishing the Yawn Up A Storm questline in the Withered Wastelands.

Step-by-Step Walkthrough

  1. Find the trapped Onix behind hardened clay northwest of the Pokemon Center.
  2. Talk to Professor Tangrowth to learn the clay can only be softened by rain.
  3. Build Seaside Tall Grass to attract Slowpoke.
  4. Guide Slowpoke back toward the Pokemon Center area.
  5. Raise regional humidity by watering, planting, opening water sources, and building water features.
  6. Build the Rain Dance Site habitat.
  7. Bring Slowpoke there and use Yawn to trigger the first rain.
  8. Progress the questline until Kyogre triggers the second, stronger rain.
  9. Return to the cave and break the softened clay barrier.
  10. Build Smooth Tall Grass to officially befriend Onix.

Onix's Specialties

  • Bulldoze: flattens terrain and unlocks the Pokemon Center rebuild, which leads to the 3D Printer.
  • Crush: breaks rocks, mines ore, and uncovers fossils.

Tips

  • Treat this as the core Withered Wastelands progression questline.
  • Build extra water features and plant seeds while exploring to raise humidity passively.
  • Smooth Rocks for the final habitat are often near rivers and coastlines.
  • Once you have Onix, rebuilding the Pokemon Center should be a top priority.