Odd One Out

[Wicked3DS]

Florges is the only one that has a three-stage evolution line.

Vileplume, Shiftry, Leavanny

 

[Harmonious Fusion]

Leavanny is the only one that didn't require a stone to evolve.

Venusaur, Flygon, Unfezant.

 

[Sonata]

Venusaur is the only one that evolves from a starter pokemon.

Quagsire, Swampert, Whishcash

 

[Nah]

Quagsire, since it wasn't introduced in Gen 3.

Giratina, Kyurem, Zygarde.

 

[Olli]

Zygarde, since it's the only one to not have another form.

Dratini, Bagon or Tyranitar?

 

[alisaie]

Tyranitar is not a dragon type and is also the only one that is fully evolved.

Emolga, Fletchling, Aipom.

 

[KKJ]

Aipom he is not dual tiped
Hoondoom,SalamenceorSandslash

 

[Sonata]

Houndoom, it's the only one without an S in its name.

Latias, Latios, Cresselia

 

[classiccartoonsftw]

Cresselia isn't part Dragon.

Togekiss, Braviary, and Staraptor

 

[KKJ]

Togekiss , he is the only one who got a type change
Furfrou , Giratina or Jolteon

 

[Juno]

Giratina, the only one capable of flight/levitation.

Sandslash, Raichu and Raticate?

 

[Clemstar]

Raichu. The only 3rd stage Pokemon. Sandslash and Raticate are both only 2nd.

Entei, Suicune, Raikou?

 

[KKJ]

Suicune, he is the only one you catch in the overworld
Kyurem, Rotom-Frost or Frosslass

 

[Kameken]

Frosslass only has one form

Yanmega, Yamask, Yveltal

 

[Judge Mandolore Shepard]

Yveltal is the only one that is a Legendary

Cobalion, Virizion, Keldeo

 

[Nah]

Keldeo is the only event one.

Jolteon, Eelektross, Magnezone.

 

[CliCliW]

Magnezone is the only on who's weak to more than ground types.

Mankey, Nidoran (Either gender), Venonat

 

[Sonata]

Nidoran is the only one with split evolution chain due to gender.

Armaldo, Kabutops, Rampardos

 

[KKJ]

Rampardos , hes the only one who his preevolved form evolves at level 30
Suicune, Thundurus or Regirock

 

[Kameken]

Thundurus is the only one with a secondary type.

Primeape, Darmanitan, Ambipom