Here you can find a list of all the pokemon that are taken by the event or through customs.

Pokemon | Genders taken

[M] - Male
[F] - Female
[SM/ SF] - Shiny
+ - All Evolutions After

Note: If you are looking for a certain pokemon just press ctrl F to make your search faster.

Nidoran | [F] [M]
Scizor | [M]
Tauros | [M]
Poohcyena | [F]
Poliwag | [F]
Arbok | [F]
Doduo | [F] [M]
Chansey | [F]
Pichu | [M]
Pikachu | [M]
Raichu | [M]
Kangaskhan | [F]
Absol | [M]
Piplup + | [F]
Buneary | [M]
Squirtle + | [M]
Blastoise | [F]
Bulbsaur + | [M]
Torchic + | [F]
Totodile + | [M]
Growlithe | [M]
Arcanine | [M] [SM]
Bellossom | [F]
Furret | [M]
Togepi | [F]
Cynaquil + | [F]
Mareep | [M]
Eevee | [F] [M]
Flareon | [F]
Vaporeon | [F]
Jolteon | [M]
Espeon | [M] [SF] [F]
Glaceon | [F]
Umbreon | [M] [SF]
Leafeon | [F]
Charizard | [M]
Smeargle | [M]
Gallade | [M]
Pidgeot | [F]
Gardevoir | [F]
Houndour | [M]
Houndoom | [M]
Teddiursa | [M]
Shinx | [F]
Pachirisu | [M] [SF]
Buizel | [F]
Smoochum | [F]
Meowth | [M]
Cubone | [M]
Azuril + [F] | [M]
Vulpix | [F]
Skitty | [F]
Magmar | [M]
Corsola | [F]
Venonat | [M]
Venomoth | [M]
Spheal | [M]
Articuno | [F]
Entei | [M]
Lugia | [M]
Shadow Lugia | [M]
Suicune | [F]
Moltres | [F]
Zapdos | [M]
Raikou | [M]
Mew | [F]
Mewtwo | [M]
Ninetales | [F] [SM]
Sneasel | [F]
Gastly | [M]
Horsea | [F]
Swellow | [F]
Stunky | [F]
Gyarados | [SF] [M]
Ponyta | [F]
Rapidash | [F] [M]
Golduck | [M]
Misdreavus | [F]
Snover | [M]
Abomasnow | [M]
Dragonair | [SF]
Sandshrew | [M]
Abra | [F]
Gulpin | [M]
Ariados | [M]
Staravia | [F]
Sableye | [M]
Glalie | [M]
Dewgong | [F]
Flygon | [SF]
Snubbull | [F]