Odd One Out

[Juno]

Minccino isn't gross just kidding Trubbish is adorable too

Spoiler:

Okay anyway, Minccino cannot have Sticky Hold as an ability.

Cofagrigus, Honedge, Litwick

 

[Sapph the Knight]

Cofagrigus is the only one that's not a dual-type.

Mewtwo, Deoxys, Genesect

 

[Renegade]

Deoxys wasn't created (by any means) by a human.

Dratini, Starly, & Ponyta~

 

[Yato]

1. Starly isn't a Gen. I mon.
2. Ponyta only evolves once.
3. Ponyta's final evo. isn't dual-typed.
4. Ponyta's final evo. isn't part Flying.

Shaymin, Keldeo, Deoxys.

 

[BrandoSheriff]

Keldeo isn't Uber tier. xD

How about...

Rattata, Vulpix, and Tauros?

 

[Nah]

Tauros is the only one who's female counterpart is another Pokemon entirely (Miltank).

Quagsire, Clefable, Infernape

 

[LeGreyfish]

Clefable, because it can't learn Encore by an Egg Move, it can only learn Encore from a previous evolution.

Muk, Garbador, Swalot.

 

[Juno]

Muk is the only one of the three that Ash Ketchum has caught in the anime.

Clefairy, Togepi and Snubbull

 

[uoneko]

togepi is the only one with a higher ratio of male to female probability

vespiqueen, vaporeon, scrafty

 

[Yato]

1. Scrafty's English name doesn't start with a "v".
2. Vespiquen is the only one that can only be one gender.
3. Vaporeon is the only mono-typed Pokemon.
4. Vaporeon is the only one that doesn't evolve via level up.

Salamence, Ferrothorn, and Gengar.

 

[DarkIllumination]

Salamence is the most reliable mix attacker.
Ferrothorn's family has iron barbs and a unique grass steel typing.
Gengar is the only ghost type to get banned in competitive battling for its mega Evolution with shadow tag and overkill spAttk.

 

[DarkIllumination]

Pikachu genesect Bidoof

 

[BrandoSheriff]

Genesect doesn't have a tail.

How about...

Mega Aerodactyl, Mega Charizard X, and Mega Charizard Y?
don't pick species :P

 

[SuperEspeon]

Genesect doesn't have a tail.

How about...

Mega Aerodactyl, Mega Charizard X, and Mega Charizard Y?
don't pick species :P

Mega Aerodactyl doesnt have 2 forms

Cincinno, Azurill, Golbat

 

[Apollo]

Cincinno doesn't evolve by happiness.

Gardevoir, Eevee, Braixen

 

[imas234]

eevee is the only unevolved pokemon there
or
braixen as it has no fairy type evolution or mega evolution

skarmory, spinda, numel

 

[SuperEspeon]

Cincinno doesn't evolve by happiness.

Gardevoir, Eevee, Braixen

I was actually thinking Golbat isnt used by one of the Pokemon professors, but that works too.
Skarmory doesnt have a cream colored stomach
Numel because Skarmory and Spinda do not have an evolution line.ù

Arbok, Meowth, and Charmeleon

 

[BrandoSheriff]

Charmeleon was never owned by Team Rocket. xD

How about...

Marill, Mew, and Togepi?

 

[Yato]

1. Togepi's name doesn't begin with M.
2. Mew is not from Johto.
3. Mew is not part Fairy.
4. Mew is the only legendary.
5. Mew is the only one that can learn every TM/HM.

Doublade, Dunsparce, Drapion.

 

[Nah]

Doublade is the only one that can make use of Eviolite.

Kricketune, Donphan, Eelektross