This is its preevolved form. At this stage, it can only harden, so it remains motionless to avoid attack.
Note, you can always call Professor Elm with the Pokemon you are trying to evolve as first in your party. This was a feature that was added specifically to Polished Crystal. If the information on this page seems incorrect, please try calling Professor Elm.
| Ilex Forest | morning | Field | Lv. 10 | 20% |
| Ilex Forest | day | Field | Lv. 10 | 20% |
| Ilex Forest | night | headbutt | Lv. 10 | 5% |
| Murky Swamp | night | headbutt | Lv. 10 | 5% |
| Yellow Forest | night | headbutt | Lv. 10 | 5% |
| Viridian Forest | morning | Field | Lv. 55-56 | 15% |
| Viridian Forest | day | Field | Lv. 55 | 20% |
| Level | Move | Type | Cat. | Power | Acc. | PP |
|---|---|---|---|---|---|---|
| TackleLevel: 1 | ||||||
| normal |  | 40 | 100 | 35 | ||
| A full-body charge attack. | ||||||
| String ShotLevel: 1 | ||||||
| bug |  | 0 | 95 | 40 | ||
| A move that lowers the foe's Speed. | ||||||
| Defense CurlLevel: 1 | ||||||
| normal | | 0 | 100 | 40 | ||
| Raises the user's Defense. | ||||||