Trainers are familiar with various methods to evolve Pokémon. Using evolution stones, raising its affection, evolving it at a certain time of day, trading it (sometimes with the Pokémon holding a certain item), and in most cases, just leveling a Pokémon up is enough to make it evolve.

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According to the Pokédex entries of the games, there are actually many ways to evolve Pokémon that most trainers aren't aware of, since these requirements aren't present in the games. For a trainer, utilizing these odd and even obscure ways that Pokémon evolve would take much more time than the traditional method of level grinding.

10 Machop Trains Constantly In Strange Ways

Machop stomp the ground flat

Machop is a Pokémon that is never satisfied unless it is training all day long. Despite constantly working out, its muscles never get sore. Machop loves to build up its muscles but does so in strange ways. Machop does things such as using a Graveler as a barbell and lifting other boulders in the mountains. Some even are dedicated enough to travel the world in a quest to learn and master every single type of martial arts that exists. With this kind of dedication, Machop would easily evolve into a Machoke.

9 A Boy Woke Up To Find He Became A Kadabra

Kadabra is happy in Pokemon

Typically, Kadabra evolves from an Abra. However, Pokédex entries describe a boy who possessed and researched extrasensory powers. Unable to control his powers, he woke up one day to find that he was a Kadabra. This could be considered the most unconventional evolution in the series. Kadabra has psychic abilities that can make strange things happen, such as turning back clocks or causing headaches, so it's not surprising that this story could be true.

8 Metang Is Made Of Two Beldums

Metang hovers in the air

Every cell in Beldum's body is a magnet. It evolves by fusing with other Beldum, which links their brains together. This heightens their psychic powers. yet their intelligence does not change. In order to evolve again into Metagross, two Metangs need to fuse together. This means that Metagross has four different brains, and combined, this makes Metagross smarter than a supercomputer. It does not hesitate to use its newfound intelligence to get the best of its opponents.

7 Cubone Evolves By Overcoming Its Sadness

Cubone raises its arms

According to the Pokédex entries, Cubone is a Pokémon that has tragically lost its mother. It wears its mother's skull to remember her by, so no one knows what Cubone's face really looks like. It is often seen mourning.

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Cubone is able to evolve into a Marowak after it overcomes its grief. When it does, this Pokémon has a tough, hardened spirit that isn't easily broken. The bones that Alolan Marowak uses belong to its mother, and it receives protection from its mother's spirit.

6 Eevee Has An Unstable Genetic Makeup

Eevee is excited

Eevee is incredibly flexible when it comes to evolving, as it currently has 8 evolutions. This is because it has an unstable genetic makeup. This allows Eevee to mutate to match its environment, which makes it capable of surviving even in harsh conditions. Its unstable genetics is also the reason why Eevee reacts to the radiation of the evolution stones. It is so easily influenced by its environment that it even starts to look like its trainer if it has one.

5 Magneton Is Created By Combining Three Magnemite

Magnemite hovers in the Pokemon anime

This may not be an evolution requirement in the games, but Magneton is typically created when a powerful magnetic force brings three Magnemite together. If a person gets too close to a Magneton, the magnetic force is strong enough to cause earaches. This force is fatal to mechanical devices like electronics. It is also capable of drying all moisture around Magneton and raising the temperature about 3.6 degrees Fahrenheit.

4 Porygon & Porygon2 Need To Be Upgraded In Order To Evolve

Pokemon Porygon2 evolution

Porygon is a man-made program, coded with the ability to only make simple movements. In order to evolve this Pokémon, it needs to be upgraded. Like many software updates, however, things didn't pan out the way the creators wanted them to. Although Porygon2 and its evolution, Porygon Z, were made with the intention of sending them into space for exploration, they failed to measure up. The upgrades gave Porygon's evolutions artificial intelligence, and now they exhibit strange behavior.

3 Slowpoke Evolves Into A Slowking When Shellder Bites Its Head

Slowking laughs

In order to evolve, a Slowpoke needs to be bitten by a Shellder. Its form is dependent on the area the Shellder bites. In order to evolve into a Slowking, the Shellder needs to bite a Slowpoke's head. These circumstances seem incredibly rare, even though Slowpoke takes five seconds to react to anything.

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The toxins from the bite seep into Slowking's brain, making it incredibly intelligent. In the Galar region, the toxins are so potent that Shellder becomes the intelligent one and takes control.

2 Onix Evolves When It Is 100 Years Old

Onix looks serious

When a trainer wants to evolve their Onix into a Steelix in the games, they need to trade the Onix with another trainer while it is holding a Steel Coat. This isn't really possible for a wild Pokémon to do, so they use a different method. A wild Onix typically evolves when it is 100 years old. As it spends a lot of time underground, its body is subjected to immense pressure that makes it harder. It also needs to consume a lot of iron-rich soil, which slowly accumulates in its body.

1 Larvesta Evolves By Setting Itself On Fire

Larvesta shoots out fire

Larvesta is a Bug/Fire-type Pokémon that is capable of shooting fire from its five horns. It is said to have been born from the sun and is often found near volcanoes. The temperature of its flames can reach up to 5500 degrees Fahrenheit. Some bug Pokémon, such as Caterpie, encase themselves in silky threads to form a cocoon, but Larresta envelops itself in a cocoon made entirely of fire. Doing so allows it to evolve into Volcarona.

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