| Pokedex Entries: |
| Red | Capable of copying an enemy's genetic code to instantly transform itself into a duplicate of the enemy. |
| Blue |
| Yellow | When it spots an enemy, its body transforms into an almost perfect copy of its opponent. |
| Gold | It can transform into anything. When it sleeps, it changes into a stone to avoid being attacked. |
| Silver | It transformation ability is perfect. However, if it is made to laugh, it can't maintain its disguise. |
| Crystal | When it encounters another DITTO, it will move faster than normal to duplicate that opponent exactly. |
| Ruby | DITTO rearranges its cell structure to transform itself into other shapes. However, if it tries to transform itself into something by relying on its memory, this POKéMON manages to get details wrong. |
| Sapphire |
| Emerald | A DITTO rearranges its cell structure to transform itself. However, if it tries to change based on its memory, it will get details wrong. |
| FireRed | It can freely recombine its own cellular structure to transform into other life-forms. |
| LeafGreen | Capable of copying an enemy's genetic code to instantly transform itself into a duplicate of the enemy. |
| Diamond | It has the ability to reconstitute its entire cellular structure to transform into whatever it sees. |
| Pearl |
| Stadium 1 | Capable of reorganizing its cells to transform into an exact duplicate of its enemy. It is usually a shapeless blob. |
| Stadium 2 | It can transform into anything. When it sleeps, it changes into a stone to avoid being attacked. |
