| Pokedex Entries: |
| Red | Its long tail serves as a ground to protect itself from its own high voltage power. |
| Blue |
| Yellow | When electricity builds up inside its body, it becomes feisty. It also glows in the dark. |
| Gold | When its electricity builds, its muscles are stimulated, and it becomes more aggressive than usual. |
| Silver | If the electric pouches in its cheeks become fully charged, both ears will stand straight up. |
| Crystal | If its electric pouches run empty, it raises its tail to gather electricity from the atmosphere. |
| Ruby | If the electrical sacks become excessively charged, RAICHU plants its tail in the ground and discharges. Scorched patches of ground will be found near this POKéMON's nest. |
| Sapphire | This POKéMON exudes a weak electrical charge from all over its body that makes it take on a slight glow in darkness. RAICHU searches for electricity by planting its tail in the ground. |
| Emerald | If it stores too much electricity, its behaviour turns aggressive. To avoid this, it occasionally discharges excess energy and calms itself down. |
| FireRed | Its electric charges can reach even 100,000 volts. Careless contact can cause even an Indian elephant to faint. |
| LeafGreen | Its long tail serves as a ground to protect itself from its own high voltage power. |
| Diamond | It turns aggressive if it has too much electricity in its body. It discharges power through its tail. |
| Pearl | It can loose 100,000-volt bursts of electricity, instantly downing foes several times its size. |
| Stadium 1 | Its electrical attacks may reach 10,000 volts. It discharges electricity from its tail, so it is not harmed by its own power. |
| Stadium 2 | When its electricity builds, its muscles are stimulated, and it becomes more aggressive than usual. |
| TCG | Dark Raichu: Stores up electricity in its body, then suddenly releases it to surprise and shock everyone. |
| Shining Raichu: If the electricity in its cheeks runs out, it sticks its tail straight up and uses it to collect energy from the air. |
