Squirtle line - well, actually, I'm not too fond of Wartortle's art, but the starter form is super adorable and the final form is super badass
Starmie
Lapras
Dewgong
Gyarados
Kadabra
Pikachu
Eevee and Vaporeon (though I've never actually gotten around to using those last two)
Starmie
Lapras
Dewgong
Gyarados
Kadabra
Pikachu
Eevee and Vaporeon (though I've never actually gotten around to using those last two)