| 1 | Red, Blue | It uses its powerful tail in battle to smash, constrict, then break the prey's bones. |
| 1 | Yellow | Its steel-like hide adds to its powerful tackle. Its horns are so hard, they can pierce a diamond. |
| 1 | Stadium | Has a rock-hard hide that is worn like armor. The long horn on its head is sharp and highly venomous. |
| 2 | Gold | It swings its big tail around during battle. If its foe flinches, it will charge with its sturdy body. |
| 2 | Silver | Its tail is thick and powerful. If it binds an enemy, it can snap the victim's spine quite easily. |
| 2 | Crystal | It uses its thick arms, legs and tail to attack forcefully. Melee combat is its specialty. |
| 2 | Stadium 2 | It swings its big tail around during battle. If its foe flinches, it will charge with its sturdy body. |
| 3 | Ruby, Sapphire | Nidoking's thick tail packs enormously destructive power. With one swing, it can topple a metal transmission tower. Once this Pokémon goes on a rampage, there is no stopping it. |
| 3 | Emerald | A Nidoking's thick tail packs enormously destructive power capable of toppling a metal transmission tower. Once it goes on a rampage, there is no stopping it. |
| 3 | FireRed | It is recognized by its rock-hard hide and its extended horn. Be careful with the horn as it contains venom. |
| 3 | LeafGreen | It uses its powerful tail in battle to smash, constrict, then break the prey's bones. |
| 4 | Diamond, Pearl, Platinum | One swing of its mighty tail can snap a telephone pole as if it were a matchstick. |
| 4 | HeartGold | It swings its big tail around during battle. If its foe flinches, it will charge with its sturdy body. |
| 4 | SoulSilver | Its tail is thick and powerful. If it binds an enemy, it can snap the victim's spine quite easily. |
| 5 | Black, White, Black 2, White 2 | One swing of its mighty tail can snap a telephone pole as if it were a matchstick. |
| 6 | X | It is recognized by its rock-hard hide and its extended horn. Be careful with the horn, as it contains venom. |
| 6 | Y | One swing of its mighty tail can snap a telephone pole as if it were a matchstick. |
| 6 | Omega Ruby, Alpha Sapphire | Nidoking's thick tail packs enormously destructive power. With one swing, it can topple a metal transmission tower. Once this Pokémon goes on a rampage, there is no stopping it. |
| 7 | Let's Go, Pikachu!, Let's Go, Eevee! | Its steel-like hide adds to its powerful tackle. Its horns are so hard, they can pierce a diamond. |
