| 2 | Gold | It is not yet skilled at storing electricity. It may send out a jolt if amused or startled. |
| 2 | Silver | Despite its small size, it can zap even adult humans. However, if it does so, it also surprises itself. |
| 2 | Crystal | It is unskilled at storing electric power. Any kind of shock causes it to discharge energy spontaneously. |
| 2 | Stadium 2 | It is not yet skilled at storing electricity. It may send out a jolt if amused or startled. |
| 3 | Ruby | Pichu charges itself with electricity more easily on days with thunderclouds or when the air is very dry. You can hear the crackling of static electricity coming off this Pokémon. |
| 3 | Sapphire | When Pichu plays with others, it may short out electricity with another Pichu, creating a shower of sparks. In that event, this Pokémon will begin crying, startled by the flash of sparks. |
| 3 | Emerald | It is still inept at retaining electricity. When it is startled, it discharges power accidentally. It gets better at holding power as it grows older. |
| 3 | FireRed | Despite its small size, it can zap even adult humans. However, if it does so, it also surprises itself. |
| 3 | LeafGreen | It is not yet skilled at storing electricity. It may send out a jolt if amused or startled. |
| 4 | Diamond | The electric pouches on its cheeks are still small. They cannot store much electricity yet. |
| 4 | Pearl | It plays with others by touching tails and setting off sparks. This appears to be a test of courage. |
| 4 | Platinum | The electric sacs in its cheeks are small. If even a little electricity leaks, it becomes shocked. |
| 4 | HeartGold | It is not yet skilled at storing electricity. It may send out a jolt if amused or startled. |
| 4 | SoulSilver | Despite its small size, it can zap even adult humans. However, if it does so, it also surprises itself. |
| 5 | Black, White, Black 2, White 2 | The electric sacs in its cheeks are small. If even a little electricity leaks, it becomes shocked. |
| 6 | X | It plays with others by touching tails and setting off sparks. This appears to be a test of courage. |
| 6 | Y | It is not yet skilled at storing electricity. It may send out a jolt if amused or startled. |
| 6 | Omega Ruby | Pichu charges itself with electricity more easily on days with thunderclouds or when the air is very dry. You can hear the crackling of static electricity coming off this Pokémon. |
| 6 | Alpha Sapphire | When Pichu plays with others, it may short out electricity with another Pichu, creating a shower of sparks. In that event, this Pokémon will begin crying, startled by the flash of sparks. |
| 7 | Sun | It is not yet skilled at controlling electricity. If you take your eyes off it, it may shock itself. |
| 7 | Moon | Despite this Pokémon's cute appearance, those who want to live with one should prepare to be on the receiving end of its electric jolts. |
| 7 | Ultra Sun | It still can't use electricity well. When it's surprised or excited, it discharges electricity unintentionally. |
| 7 | Ultra Moon | It has electric sacs in its cheeks. When they're fully charged, Pichu plays very energetically. |
| 8 | Sword | Despite its small size, it can zap even adult humans. However, if it does so, it also surprises itself. |
| 8 | Shield | The electric sacs in its cheeks are small. If even a little electricity leaks, it becomes shocked. |
