Like with previous games, a number of Pokémon are missing from the game. These Pokémon can only be obtained via transferring from the 3rd generation games, or by trading from Diamond, Pearl or other players with it
Sinnoh No. Selection Pic Name Type 1 Type 2
#001 Bulbasaur
#002 Ivysaur
#003 Venusaur
#004 Charmander  
#005 Charmeleon  
#006 Charizard
#007 Squirtle  
#008 Wartortle  
#009 Blastoise  
#150 Mewtwo  
#151 Mew  
#152 Chikorita  
#153 Bayleef  
#154 Meganium  
#155 Cyndaquil  
#156 Quilava  
#157 Typhlosion  
#158 Totodile  
#159 Croconaw  
#160 Feraligatr  
#198 Murkrow
#200 Misdreavus  
#243 Raikou  
#244 Entei  
#245 Suicune  
#249 Lugia
#250 Ho-oh
#251 Celebi
#252 Treecko  
#253 Grovyle  
#254 Sceptile  
#255 Torchic  
#256 Combusken
#257 Blaziken
#258 Mudkip  
#259 Marshtomp
#260 Swampert
#328 Trapinch
#329 Vibrava
#330 Flygon
#366 Clamperl
#367 Huntail
#368 Gorebyss
#380 Latias
#381 Latios
#382 Kyogre  
#383 Groudon  
#384 Rayquaza
#385 Jirachi
#386 Deoxys  
#429 Mismagius  
#430 Honchkrow
#431 Glameow  
#432 Purugly  
#434 Stunky
#435 Skuntank