Odd One Out

[Squirrel]

Scizor is the only trade evolution!

Rotom, Spiritomb, Jirachi?

 

[Olli]

Jirachi is the only Pokemon that isn't obtainable without an event or transferring it from the Pokemon Channel.

Articuno, Zapdos or Moltres?

 

[Squirrel]

Flygon is the only one without a mega form!

Giratina, Jirachi, Mewtwo?

 

[Voliol]

Mewtwo, It's the only one without ribbons!

What about Frogadier, Krokorok and Snivy?

 

[Squirrel]

Krokorok isn't a starter Pokémon!

Jellicent, Drifblim, Gastrodon?

 

[Dedenne1]

Jellicent is the only Unova Pokemon or Drifbim is the only one whos not part water :P

Dedenne, Pacharisu, Emolga?

 

[Lycanthropy]

Emolga is the only one not weak to ground.

Poliwag, Mankey, Nidoran♂

 

[Olli]

Poliwag is the only one to completely change colours in one of its evolutionary paths; it's also the only with split evolutions.

Pidgey, Taillow, Starly

 

[Dedenne1]

Taillow only has 1 evolution
Palkia, Dialga, Giratina

 

[Meadow]

Giratina's the only one with two forms!

Ursaring, Beartic, Pangoro

 

[Squirrel]

Pangoro is the only one with a really weird evolution method!

Teddiursa, Cubchoo, Pancham? ;D

 

[Dedenne1]

@squirrel reallllllly weird
Ummm ummmm ummm Teddiursa is the only one with a moon on its head which could link it to other things that the other two are lacking and stuff right? Or it could just be the pancham evolves into a dual type while the others dont :3

Hitmonlee, hitmonchan, Hitmontop

 

[Pendraflare]

Hitmontop requires same Attack/Defense for evolution.

Zoroark, Houndoom, Hydreigon

 

[Squirrel]

Zoroark doesn't start with a H. 8D

Mightyena, Beartic, Slowking?

 

[Lycanthropy]

Slowking is the only one without fur.

Kakuna, Metapod, Cascoon

 

[Squirrel]

Cascoon is the only one who's part of a two-evolution line!

Kangaskhan, Absol, Cryogonal?

 

[Meadow]

Cryogonal is the only genderless Pokémon!

Bulbasaur, Sewaddle, Chikorita

 

[Lycanthropy]

Sewaddle isn't a starter Pokémon.

Mawile, Mr. Mime, Marill

 

[Meadow]

Mawile is the only one that can Mega Evolve.

Dugtrio, Weezing, Magneton

 

[Dedenne1]

Magneton is a dual type!

Salamence, Noivern, Dragonite