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Evolving Rowlet into Dartrix and then Decidueye
Grass-type starter Pokemon Rowlet evolves into its second form at level 17. It then evolves once more into its final form Decidueye at level 34.

Evolving Litten into Torracat and then Incineroar
Much like the other starters, fire-type Litten evolves into second form Torracat at level 17. It will grow into the massive-looking Incineroar at level 34.

Evolving Popplio into Brionne and finally Primarina
Water-type starter Popplio evolves into its second version in Brionne at level 17, and like the other starters reaches its final form, Primarina, at level 34.

Evolving Rockruff into Lycanroc Midday or Midnight Form
New rock puppy Rockruff can evolve one of two ways depending on which version of the game you have. In Sun itll evolve at level 25 and in the daytime into the Midday form of Lycanroc. In Moon itll also evolve at level 25, but at night and into the Midnight form of Lycanroc. The two are version-exclusive.

Evolving Yungoos into Gumshoos
The angry-looking newcomer that is Yungoos levels up quite simply and quite early on just get to level 20 and itll evolve into Gumshoos. Mr. President, is that you?

Evolving Pikipek into Trumbeeak and finally Toucannon
Pikipek looks like a pretty standard-issue early-game flying-type Pokemon, but it actually gets pretty badass by the end. At level 14 it evolves into Trumbreak, and at level 28 it evolves into the awesome Toucan-like Toucannon.

Evolving Grubbin into Charjabug and then Vikavolt
Grubbin also looks like another fairly standard-issue Pokemon the familiar early-game, 3-stage bug-type. It evolves into Charjabug at Level 20, but wont evolve into its final form, Vikavolt, unless you level up in the Vast Poni Canyon area of Alola. Level up there and Vikavolt is yours.

Evolving Cutiefly into Ribombee
Tiny little new bug and fairy-type Pokemon Cutiefly evolves into Ribombee at Level 25. Simple!

Evolving Salandit into Salazzle
New fire and poison-type lizard Salandit is an interesting case for Pokemon only the female version of Salandit evolves. The female Salandit will evolve into Salazzle at Level 33, but the male version will remain as Salandit forever.

Evolving Stufful into Bewear
Cutesy baby-bear Stufful will evolve into the equally cute but much more dangerous Bewear at level 27 just dont get trapped in one of its hugs. It could be deadly.

Evolving into Golisopod
Wimpod does just look sort of lame. Its a water and bug-type hybrid and are known well for their cowardly nature. You might want to hang onto one, though at level 30 it evolves into the utterly bad-ass Golisopod.

Evolving Bounsweet into Steenee and finally Tsareena
Bounsweet will evolve into Steenee at any point after level 18. To evolve into Tsareena you need to justify those dangerous-looking, sharp legs that Pokemon has itll only evolve if your Steenee knows the move stomp. Steenee will naturally learn Stomp at level 29.

Evolving Mudbray into Mudsdale
[/b]New fiery donkey-looking Pokemon Mudbray will evolve into the much more regal-looking Mudsdale at level 30.

Evolving Fomantis into Lurantis
New grass-type Fomantis will evolve into the typically unsettlingly humanoid-looking Lurantis by leveling up in the daytime to level 34 or higher.

Evolving Sandygast into Palossand
Sandcastle-looking ghost-type Pokemon Sandygast is a late bloomer, but will level up into the even creepier and more impressive-looking Palossand at level 42.

Evolving Morelull into Shiinotic
Grass and fairy-type Morelull resembles mushrooms, which means the evolution for it is pretty obvious it grows. It evolves into Shiinotic at level 24 and up.

Evolving Crabrwaler into Crabominable
Fighting-type Crabrawler is pretty much always found guarding berries. Its greedy like that. If you want to evolve it into the particularly deadly-looking and excellently-named Crabominable youll want to level it up while in Alolas Mount Lanakila area.

Evolving Type: Null into Silvally
Type: Null is pretty unique, and this a Pokemon youll only have the chance to access much later in the game. Once you do, youll want to make it happy by battling with it, hanging out with it, feeding it and spoiling it by petting it and so on. Once it has sufficient happiness, itll evolve upon level up.

Evolving Jangmo-o into Hakamo-o and finally Kommo-o
Despite seeming like exactly the type of Pokemon thatd have some sort of complex and convoluted evolution method, Jangmo-o evolves into Hakamo-o at level 34. Its that simple. It stays simple, too: Hakamo-o will finally evolve into Komo-o at level 45.

Evolving Alolan Ratatta into Alolan Raticate
Alolan Ratatta evolves into Alolan Raticate at Level 20. All you have to do is keep fighting and battling with this Ratatta and itll eventually level up as normal.

Evolving Pichu into Pikachu then into Alolan Raichu
The iconic Pikachu line of Pokemon get an all-new Alolan form in Sun & Moon but only for its final evolution phase. Pichu is the most easy to catch. Pichu is evolved into Pikachu by having its Happiness at maximum. Max this out by feeding Pichu and caring for it. Once you have a Pikachu, present it with a Thunder Stone to get your very own levitating, half-Psychic type Alolan Raichu.

Evolving Alolan Sandshrew into Alolan Sandslash
Alolan Sandshrew and Sandslash come with an all-new Ice-type classification and are exclusive to Pokemon Moon. To evolve into Sandslash, simply present Alolan Sandshrew with an Ice Stone.

Evolving Alolan Vulpix into Alolan Ninetales
Alolan Vulpix and Ninetales come with an all-new Ice-type classification and are exclusive to Pokemon Sun. To evolve into the majestic Ninetales simply present Alolan Vulpix with an Ice Stone.

Evolving Alolan Meowth into Alolan Persian
Alolan Meowth can be evolved into Alolan Persian simply by keeping it happy. Max out its happiness by feeding it, winning in battles and spoiling it by petting and grooming it, and when happiness is at a max level Meowth up itll then evolve.

Evolving Alolan Geodude into Alolan Graveler and finally Alolan Golem
This one is thankfully pretty simple Alolan Geodude will evolve into a Graveler that also has some incredible hair at Level 25. If you want to get the truly impressive mustachioed Alolan Golem youll have to trade a Graveler, at which point it will evolve.

Evolving Alolan Grimer into Alolan Muk
The bright green I look like Ive been gorging on Custard Alolan Grimer will evolve into the rainbow-coloured Alolan Muk at Level 38.

Evolving Exeggcute into Alolan Exeggutor
The massive-necked Alolan Exeggutor has become something of a meme even before Pokemon Sun & Moon released, and, well for good reason. Look at it! Use a Leaf Stone on a regular old Exeggcute to evolve it into this Alolan version.

Evolving Alolan Diglett into Alolan Dugtrio
The Alolan Diglett and Alolan Dugtrio do rather look like theyre having a bit of a crisis and have picked up some wigs, but they have a surprisingly serious backstory. An Alolan Diglett is easily found in a number of locations and will evolve into Dugtrio at Level 26.

Evolving Cubone into Alolan Marowak
A regular old Cubone can be evolved into the Alolan variant of Marowak at level 28 onwards you just need to make sure you level up at night in-game. Thatll be at night in real world time for Sun owners and any time in the daytime for Moon owners the two games have their in-game clocks offset by 12 hours, so Moon will always be 12 hours ahead.