| 1 | Red, Blue | It accumulates negative ions in the atmosphere to blast out 10000-volt lightning bolts. |
| 1 | Yellow | A sensitive Pokémon that easily becomes sad or angry. Every time its mood changes, it charges power. |
| 1 | Stadium | Its weapons are its 10,000-volt electric attacks and its spiky fur. Its sharp hair can pierce enemies when it bristles. |
| 2 | Gold | It concentrates the weak electric charges emitted by its cells and launches wicked lightning bolts. |
| 2 | Silver | Every hair on its body starts to stand sharply on end if it becomes charged with electricity. |
| 2 | Crystal | The negatively charged ions generated in its fur create a constant sparking noise. |
| 2 | Stadium 2 | Every hair on its body starts to stand sharply on end if it becomes charged with electricity. |
| 3 | Ruby, Sapphire | Jolteon's cells generate a low level of electricity. This power is amplified by the static electricity of its fur, enabling the Pokémon to drop thunderbolts. The bristling fur is made of electrically charged needles. |
| 3 | Emerald | Its cells generate weak power that is amplified by its fur's static electricity to drop thunderbolts. The bristling fur is made of electrically charged needles. |
| 3 | FireRed | If it is angered or startled, the fur all over its body bristles like sharp needles that pierce foes. |
| 3 | LeafGreen | It accumulates negative ions in the atmosphere to blast out 10000-volt lightning bolts. |
| 4 | Diamond, Pearl | It controls 10,000-volt power and can raise all the fur on its body as if it were sharp needles. |
| 4 | Platinum | If agitated, it uses electricity to straighten out its fur and launch it in small bunches. |
| 4 | HeartGold | It concentrates the weak electric charges emitted by its cells and launches wicked lightning bolts. |
| 4 | SoulSilver | Every hair on its body starts to stand sharply on end if it becomes charged with electricity. |
| 5 | Black, White | If agitated, it uses electricity to straighten out its fur and launch it in small bunches. |
| 5 | Black 2, White 2 | By storing electricity in its body, it can shoot its bristlelike fur like a barrage of missiles. |
| 6 | X | Every hair on its body starts to stand sharply on end if it becomes charged with electricity. |
| 6 | Y | It accumulates negative ions in the atmosphere to blast out 10,000-volt lightning bolts. |
| 6 | Omega Ruby, Alpha Sapphire | Jolteon's cells generate a low level of electricity. This power is amplified by the static electricity of its fur, enabling the Pokémon to drop thunderbolts. The bristling fur is made of electrically charged needles. |
| 7 | Sun | They send out electrical charges of about 10,000 volts. Because they are high-strung, it can be difficult to grow close to them. |
| 7 | Moon | When its fur stands on end, that's a sign it's about to give off a jolt of electricity. Take care, as sometimes lightning strikes next to it, too. |
| 7 | Ultra Sun | Its lungs contain an organ that creates electricity. The crackling sound of electricity can be heard when it exhales. |
| 7 | Ultra Moon | Its fur stands on end, becoming like needles it fires at enemies. Once they're weakened, it finishes them off with a 10,000 volt shock. |
| 7 | Let's Go, Pikachu!, Let's Go, Eevee! | A sensitive Pokémon that easily becomes sad or angry. Every time its mood changes, it charges power. |
| 8 | Sword | If it is angered or startled, the fur all over its body bristles like sharp needles that pierce foes. |
| 8 | Shield | It accumulates negative ions in the atmosphere to blast out 10,000-volt lightning bolts. |
