Additionally, some Pokémon have Evolution moves, which are moves that Pokémon will always attempt to learn when evolving into that species, regardless of level. When a Pokémon evolves, it immediately attempts to learn all moves that the evolved form can learn at its current level. Additionally, the player can prevent a Pokémon from evolving upon leveling up by pressing the 'Back' button when it would evolve. Holding an Everstone prevents a Pokémon from evolving by level up. The Pokémon's personal properties, however, such as Nature and Shininess, remain. This new species has a different Pokédex number and base stats, and may be a different type, learn different moves, and have a different Ability. When a Pokémon evolves, it becomes a new species of Pokémon. For example, Wormadam's cloak depends on the cloak Burmy had when it evolved.

On the other hand, male Burmy can only evolve into Mothim, while female Burmy can only evolve into Wormadam.įor some evolutions into Pokémon with multiple forms, the form of the evolved Pokémon depends on how it evolved. Similarly, all Snorunt can evolve into Glalie, but only female Snorunt can evolve into Froslass. For example, only female Combee can evolve into Vespiquen-male Combee cannot evolve at all. Some evolutions are dependent on the Pokémon's gender. Having a certain Pokémon in the party, or a certain type of Pokémon.The location the player is in, or the current weather in that location.Knowing a certain move or a move of a certain type.In addition to the trigger, many Pokémon have one or more additional requirements for them to be able to evolve. Being exposed to an item (such as an Evolution stone).Gaining a level (the most common trigger).In the game, Pokémon normally only evolve after one of two events: An example of this type of evolution family is below. All starter Pokémon have this type of evolutionary family. These are evolutionary families in which a Pokémon can evolve twice. See also: Category:Pokémon that are part of a three-stage evolutionary line These are the most common type of evolutionary families. These are evolutionary families in which a Pokémon can only ever evolve once. See also: Category:Pokémon that are part of a two-stage evolutionary line In a three-stage family, at least one of the evolved forms can evolve once again. In a two-stage family, any member of the family can evolve at most once, from the unevolved form into one of the evolved forms. In a one-stage family, there is only a single Pokémon that cannot evolve. Pokémon evolutionary families have anywhere between one and three stages. The species at the lowest evolutionary stage in an evolutionary family can ultimately evolve into any member of the evolutionary family. (Currently, the actual percentage is 94%.) Rowan's research focuses on whether evolution is a form of maturity in Pokémon, and looking at the implications of the process on Legendary Pokémon (most of which cannot evolve).Īn evolution family is a group of Pokémon who are all related by evolution. According to Elm's research, over 90% of all Pokémon are connected to at least one other through evolution.

Professor Elm and Professor Rowan are the leading experts in Pokémon evolution. Pokémon may also change Ability upon evolution. Evolution is mostly independent from the aging process, instead being triggered by external factors, such as gaining experience in battle or being exposed to certain items.Įvolution is not a merely visual change, as Pokémon of a higher evolutionary stage have different (and usually increased) stats, can learn different moves, and sometimes change types (although normally at least one of the pre-evolved form's types remains the same). With respect to real-world phenomena, Pokémon evolution is more similar to metamorphosis than evolution. Evolution is a process in which a Pokémon changes into a different species of Pokémon.

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