if all pokemon spaces have been filled it will state '(full)' next to the pokemon so if you use that pokemon if its full your bio wont be approved. (also some of these pokemon have only one place avalible)
Zapdos
Artcuno
Moltres
Mew
Mewtwo
Raikou
Entei
Suicune
Ho-Oh
Lugia
Celebi
Kyogre
Groudon
Rayquaza
Regigigas
Registeel
Regirock
Regice
Latios
Latias
Jirachi
Deoxys
Uxie
Mesprit
Azelf
Dialga
Palkia
Giratina
Heatran
Cresselia
Darkrai
Arceus
Phione
Shaymin
Manaphy
Zekrom
Reshiram
Victini
Dragonite
Togepi
Absol
Lucario
Arcanine