Generation 2 · Pokédex profile
Single Horn Pokémon
Pokédex entry
They gather in forests seeking the sweet sap of trees. It is completely clad in a steel-hard shell. It is proud of its horn, which it uses to fling foes.
Battle data
Pokédex entry
A tremendous influx of energy builds it up, but when Mega Evolution ends, Heracross is bothered by terrible soreness in its muscles.
Battle data
No conventional evolution relationship is recorded for this species.
Conditional evolutions can require additional game-specific prerequisites beyond the displayed method.
| Method | Location | Level | Evidence |
|---|---|---|---|
| Grass / ground | Safari Zone North | Lv. 27–29 | Source-indexed, not individually verified |
| Grass / ground | Six Island Pattern Bush | Lv. 15–30 | Source-indexed, not individually verified |
| Rock Smash | Azalea Town | Lv. 10 | Source-indexed, not individually verified |
| Rock Smash | Blackthorn City | Lv. 15 | Source-indexed, not individually verified |
| Rock Smash | Mahoganytown | Lv. 15 | Source-indexed, not individually verified |
| Rock Smash | Mt Silver Mountain Side | Lv. 40 | Source-indexed, not individually verified |
| Rock Smash | Mt Silver Outside | Lv. 40 | Source-indexed, not individually verified |
| Rock Smash | Route 26 | Lv. 20 | Source-indexed, not individually verified |
| Rock Smash | Route 28 | Lv. 40 | Source-indexed, not individually verified |
| Rock Smash | Route 42 | Lv. 15 | Source-indexed, not individually verified |
| Rock Smash | Route 44 | Lv. 20 | Source-indexed, not individually verified |
| Rock Smash | Route 45 | Lv. 20 | Source-indexed, not individually verified |
| Rock Smash | Route 46 | Lv. 20 | Source-indexed, not individually verified |
| Rock Smash | Route 47 | Lv. 20 | Source-indexed, not individually verified |
| Rock Smash | Route 48 | Lv. 20 | Source-indexed, not individually verified |
Rare grass and Surfing encounters inherit the first native slot's level range. Supplemental fishing follows each rod's native slots. These ranges exclude Lure effects and randomizer replacements; eligibility restrictions still apply.
Data source: configured Grand Anthology Gen 1–9 species, forms and abilities. The website uses frame-cropped copies of the game's existing Pokémon sprites, which remain franchise/artist-owned assets. Some alternate forms use labeled default-form artwork when their individual sprite is unavailable. See acknowledgments for credits.