Odd One Out

[DyingWillFlareon]

Dusclops isn't a Flying type!

Meowth, Skitty, Purrloin.

 

[Maruno]

Purrloin isn't 6 letters long.

Jolteon, Flareon, Vaporeon.

 

[Sirfetch’d]

Flareon is a more physical attacker than the other two!

Bulbasaur, Fennekin, Totodile?

 

[Percy]

Ash got Bulbasaur and Totodile, so Fennekin!

yanma, swinub, tangela.

 

[Sirfetch’d]

Tangela is a single typed Pokemon!

Onix, Slowpoke, Politoed?

 

[Meadow]

Politoed wasn't introduced in Generation I!

Pichu, Plusle, Dedenne

 

[Sirfetch’d]

Pichu evolves unlike the others!

Marowak, Farfetch'd, Breloom?

 

[Starry Windy]

Breloom is from Hoenn, unlike the other two.

Fennekin, Pancham, Goomy.

 

[Sirfetch’d]

Pancham is part of a 2 stage family unlike the others.

Machoke, Haunter, Seadra.

 

[Maruno]

Machoke is the only one with feet.

Dugtrio, Tangrowth, Delcatty.

 

[Sirfetch’d]

Tangrowth doesn't have a D(in it's name)

Relicanth, Wailord, Milotic?

 

[Pendraflare]

Relicanth has a second type.

Vaporeon, Lapras, Poliwrath

 

[Sapph the Knight]

Vaporeon, it's the only one in the field egg group.

Tauros, Nidoking, Snorlax

 

[blue]

Tauros is the only one to not have any evolutions.

Beartic, Ursaring, Pancham

 

[Maruno]

Ursaring's name isn't two syllables long.

Staryu, Unown, Mismagius.

 

[Meadow]

Unown isn't a part of any known evolution line!

Garchomp, Flygon, Salamence

 

[Golurks Were Meant to Fly]

Garchomp, as it's the only one in two egg groups!

Jolteon, Flareon, Vaporeon

 

[Sirfetch’d]

Flareon is the only one without an "absorb" ability!

Sawsbuck, Castform, Stantler?

 

[Sapph the Knight]

Stantler. It has no extra forms.

Gardevoir, Lucario, Zoroark

 

[Etherion]

Zoroark, since it has only one type.

Blaziken, Quilava, Chimchar