Odd One Out

[Jon4567]

Jolteon is the only one introduced in Generation 1.

Vaporeon, Flareon, Jolteon.

 

[Codename Peace]

Jolteon because it's the only one of the three that learns Pin Missile!

Spoiler:

Growlithe, Ninetales, Mega Charizard Y?

 

[Abby]

Groslite is the only one without drought


Totodile
Croconaw
Feraligatr

 

[Nah]

Feraligatr is the only one who's name doesn't have an o in it.

Froslass, Jolteon, Togetic

 

[Abby]

Jolteons evelution method was possible in gen 1

Espeon
Greninja
Slaking

 

[Trick 'r Treat]

Greninja is the only one with 2 types.

Chingling
Tyranitar
Weavile

 

[Apollo]

Chingling isn't doubly weak to fighting.

Roselia, Chandelure, Vaporeon

 

[Mawa]

Roselia is the one that don't need a evolutionnary stone.

Wurmple Caterpie Scatterbug

 

[xVaporeon]

Scatterbug's hidden ability is Friend Guard - while both Caterpie and Wurmple's is Run Away

Dragonite, Tyranitar and Rapidash

 

[Trick 'r Treat]

Dragonite isn't weak to Water types.

Slurpuff
Bellsprout
Regice

 

[Yato]

1. Regice is a legendary.
2. Bellsprout can still evolve.
3. Bellsprout is dual typed.
4. Regice can't be legally found in Kalos.

Skuntank, Cyndaquil, Wigglytuff.

 

[waveguidebuizel]

Cyndaquil's the only one that's not guaranteed to be in the story of PMD Explorers.

Porygon, Pineco, or Piplup?

 

[Nah]

Porygon is the only man-made one.

Luvdisc, Tentacool, Alomomola

 

[Apollo]

Tentacool evolves.
Really boring I know, but it's the best I've got lol

Seel, Seadra, Seaking

 

[NyxShooter]

Both Seadra and Seaking have the word sea in them whilst seel doesn't.

Groudon, Lucario and Crobat

 

[Nah]

Crobat is the only one that doesn't get a special transformation thing (Lucario can Mega Evolve, while Groudon can undergo Primal Reversion).

Flygon, Altaria, Salamence

 

[classiccartoonsftw]

Salamence isn't cute, unlike Flygon and Altaria.

Durant, Genesect, and Escavalier

 

[Apollo]

Escavalier is a part of an evolution family.

Charizard, Talonflame, Moltres

 

[Hiatus]

Two of them are birds, and other's more or less a lizard.

Blastoise, Empoleon, Feraligatr.

 

[Juno]

Empoleon is not weak to Grass type attacks because of its Steel typing.

Dewgong, Cloyster and Lapras.