| Pokedex Entries: |
| Red | Its short feet are tipped with suction pads that enable it to tirelessly climb slopes and walls. |
| Blue |
| Yellow | If you touch the feeler on top of its head, it will release a horrible stink to protect itself. |
| Gold | For protection, it releases a horrible stench from the antenna on its head to drive away enemies. |
| Silver | Its feet have suction cups designed to stick to any surface. It tenaciously climbs trees to forage. |
| Crystal | It crawls into foliage where it camouflages itself among leaves that are the same color as its body. |
| Ruby | CATERPIE has a voracious appetite. It can devour leaves bigger than its body right before your eyes. From its antenna, this POKéMON releases a terrifically strong odor. |
| Sapphire |
| Emerald | Its voracious appetite compels it to devour leaves bigger than itself without hesitation. It releases a terribly strong odor from its antennae. |
| FireRed | It is covered with a green skin. When it grows, it sheds the skin, covers itself with silk, and becomes a cocoon. |
| LeafGreen | Its short feet are tipped with suction pads that enable it to tirelessly climb slopes and walls. |
| Diamond | It releases a stench from its red antenna to repel enemies. It grows by molting repeatedly. |
| Pearl |
| Stadium 1 | It has large, eye-like patterns on its head as protection. They are used to frighten off enemies. |
| Stadium 2 | For protection, it releases a horrible stench from the antenna on its head to drive away enemies. |
Bug