This doesn't really belong in the anime section, more like in the General Pokemon Discussion. Not to mention you can just look it up and count for yourself on Serebii's main site.
Kanto: 5
Articuno, Zapdos, Moltres, Mewtwo, Mew
Johto: 6
Entei, Suicune, Raikou, Lugia, Ho-Oh, Celebi
Hoenn: 10
Kyogre, Groudon, Rayquaza, Regice, Registeel, Regirock, Latias, Latios, Jirachi, Deoxys
Sinnoh: 14
Dialga, Palkia, Giratina, Uxie, Azelf, Mesprit, Regigigas, Darkrai, Cresselia, Heatran, Phione, Manaphy, Shaymin, Arceus
Unova: 12
Reshiram, Zekrom, Kyurem, Cobalion, Terrakion, Virizion, Keldeo, Landorus, Tornadus, Thundurus, Meloetta, Genesect
//CLOSED