Best
Diamond and pearl:
Scizor, Hippowdon. Them...just them
platinum
SHAYMIN! Togekiss (aerodynamic poses get to me
, Houndoom, Manaphy, phione, Froslass, Weavile (epic)
HGSS
Meganium, Dragonite, Snorlax, Aerodactyl
Ugliest:
Diamond and pearl
purugly. Just purugly
platinum
Skuntank, purugly, Cherubi, Dusknoir.
HGSS
Charizard, Venusaur, pikachu.