| Pokémon | ||
|---|---|---|
| Name | Koffing | Onix |
| Classification | Poison gas Pokémon | Rock snake Pokémon |
| Type(s) | Poison | Rock Ground |
| Strength (0.8x) | Grass Fighting Poison Bug Fairy | Normal Fire Electric Poison Flying Rock |
| Weakness (1.25x) | Ground Psychic | Water Grass Ice Fighting Ground Steel |
| Fast Attack(s) | Tackle Normal | DPS: 8.73 (x0.8) Not Very Effective | DPS: 11.03 (x1.25) Super Effective | Rock Throw Rock STAB | DPS: 13.64 (x1.25) Super Effective | Tackle Normal |
| Special Attack(s) | Dark Pulse Dark | DPS: 12.86 (x1) | Sludge Poison STAB | DPS: 9.23 (x0.8) Not Very Effective | Sludge Bomb Poison STAB | DPS: 16.92 (x0.8) Not Very Effective | DPS: 19.54 (x1.25) Super Effective | Rock Slide Rock STAB | DPS: 32.26 (x1.25) Super Effective | Stone Edge Rock STAB | DPS: 15 (x1) | Iron Head Steel |
| Weight | 1 kg | 210 kg |
| Height | 0.6 m | 8.8 m |
| Buddy Distance | 3 km | 5 km |
| Base Stamina | 80 stamina points. | 70 stamina points. |
| Base Attack | 119 attack points. | 85 attack points. |
| Base Defense | 164 defense points. | 288 defense points. |
| Max CP | 1091 | 1002 |
| Base Flee Rate | 10 % | 9 % |
| Base Catch Rate | 40 % | 16 % |
| 2nd Ball Odds | 36.00 % | 14.56 % |
| Next Evolution Requirements | 50 | - |
| Damage Phase Length | 0.00s (ms) | 0.00s (ms) |