| Pokedex Entries: |
| Red | Its genetic code is irregular. It may mutate if it is exposed to radiation from element Stones. |
| Blue |
| Yellow | Its genetic code is unstable, so it could evolve in a variety of ways. There are only a few alive. |
| Gold | It has the ability to alter the composition of its body to suit its surrounding environment. |
| Silver | Its irregularly configured DNA is affected by its surroundings. It evolves if its environment changes. |
| Crystal | Its ability to evolve into many forms allows it to adapt smoothly and perfectly to any environment. |
| Ruby | EEVEE has an unstable genetic makeup that suddenly mutates due to the environment in which it lives. Radiation from various STONES causes this POKéMON to evolve. |
| Sapphire |
| Emerald | An EEVEE has an unstable genetic makeup that suddenly mutates due to its environment. Radiation from various STONES causes this POKéMON to evolve. |
| FireRed | An extremely rare POKéMON that may evolve in a number of different ways depending on stimuli. |
| LeafGreen | Its genetic code is irregular. It may mutate if it is exposed to radiation from element Stones. |
| Diamond | A rare Pokemon that adapts to harsh environments by taking on different evolutionary forms. |
| Pearl |
| Stadium 1 | Its genetic code is irregular. It evolves into three kinds of POKéMON when exposed to the radiation of elemental stones. |
| Stadium 2 | It has the ability to alter the composition of its body to suit its surrounding environment. |
| TCG | Eevee: A rare and unique Pokémon about which little is known, as few have been captured. |
