Union Cave
Pokemon HeartGold
| Pokemon | Levels | Method | Rarity |
|---|---|---|---|
 Absol | 6-22 | Walking in tall grass or a cave | 60% |
 Bronzor | 6-22 | Walking in tall grass or a cave | 60% |
 Chingling | 5-22 | Walking in tall grass or a cave | 60% |
 Corsola | 40 | Fishing with a Super Rod | 60% |
| Corsola | 20 | Fishing with a Good Rod | 20% |
 Geodude | 6-21 | Walking in tall grass or a cave | 70% |
 Golbat | 22 | Walking in tall grass or a cave | 20% |
 Goldeen | 10 | Fishing with an Old Rod | 30% |
| Goldeen | 20 | Fishing with a Good Rod | 120% |
| Goldeen | 40 | Fishing with a Super Rod | 140% |
 Kingler | 40 | Fishing with a Super Rod | 10% |
 Krabby | 40 | Fishing with a Super Rod | 60% |
| Krabby | 20 | Fishing with a Good Rod | 50% |
| Krabby | 10 | Fishing with an Old Rod | 15% |
 Magikarp | 40 | Fishing with a Super Rod | 40% |
| Magikarp | 10 | Fishing with an Old Rod | 255% |
| Magikarp | 20 | Fishing with a Good Rod | 120% |
 Makuhita | 5-22 | Walking in tall grass or a cave | 60% |
 Onix | 6-23 | Walking in tall grass or a cave | 20% |
 Quagsire | 10-25 | Surfing | 110% |
 Raticate | 22 | Walking in tall grass or a cave | 30% |
 Rattata | 4-20 | Walking in tall grass or a cave | 20% |
 Sandshrew | 6-8 | Walking in tall grass or a cave | 60% |
 Seaking | 40 | Fishing with a Super Rod | 20% |
 Staryu | 40 | Fishing with a Super Rod | 30% |
| Staryu | 20 | Fishing with a Good Rod | 10% |
 Tentacool | 10-20 | Surfing | 60% |
 Tentacruel | 15-25 | Surfing | 10% |
 Wooper | 10-20 | Surfing | 120% |
 Zubat | 5-22 | Walking in tall grass or a cave | 80% |
Pokemon SoulSilver
| Pokemon | Levels | Method | Rarity |
|---|---|---|---|
| Absol | 6-22 | Walking in tall grass or a cave | 60% |
| Bronzor | 6-22 | Walking in tall grass or a cave | 60% |
| Chingling | 5-22 | Walking in tall grass or a cave | 60% |
| Corsola | 20 | Fishing with a Good Rod | 20% |
| Corsola | 40 | Fishing with a Super Rod | 60% |
| Geodude | 6-21 | Walking in tall grass or a cave | 70% |
| Golbat | 22 | Walking in tall grass or a cave | 20% |
| Goldeen | 10 | Fishing with an Old Rod | 30% |
| Goldeen | 20 | Fishing with a Good Rod | 120% |
| Goldeen | 40 | Fishing with a Super Rod | 140% |
| Kingler | 40 | Fishing with a Super Rod | 10% |
| Krabby | 40 | Fishing with a Super Rod | 60% |
| Krabby | 20 | Fishing with a Good Rod | 50% |
| Krabby | 10 | Fishing with an Old Rod | 15% |
| Magikarp | 40 | Fishing with a Super Rod | 40% |
| Magikarp | 10 | Fishing with an Old Rod | 255% |
| Magikarp | 20 | Fishing with a Good Rod | 120% |
| Makuhita | 5-22 | Walking in tall grass or a cave | 60% |
| Onix | 6-23 | Walking in tall grass or a cave | 20% |
| Quagsire | 10-25 | Surfing | 110% |
| Raticate | 22 | Walking in tall grass or a cave | 30% |
| Rattata | 4-20 | Walking in tall grass or a cave | 80% |
| Seaking | 40 | Fishing with a Super Rod | 20% |
| Staryu | 20 | Fishing with a Good Rod | 10% |
| Staryu | 40 | Fishing with a Super Rod | 30% |
| Tentacool | 10-20 | Surfing | 60% |
| Tentacruel | 15-25 | Surfing | 10% |
| Wooper | 10-20 | Surfing | 120% |
| Zubat | 5-22 | Walking in tall grass or a cave | 80% |