Normal	Bulbasaur	Grass/Poison
Normal	Charmander	Fire
Normal	Squirtle	Water
Prism	Pidgey		Normal/Flying		Gains access to Swift, Tri Attack, etc.  Special-based.
Fey	Zigzagoon	Normal/Fairy		Fairy moves, natural Play Rough, maybe a new physical Fairy move?
Stealth	Spinarak	Bug/Dark		Emphasis on status/debilitation and a better learnset.
Enraged	Slakoth		Normal/Fighting		Reversed.  Slakoth/Slaking highly aggressive, Vigoroth docile.
Burning	Bellsprout	Grass/Fire		"Burning" refers to vicious stomach acids, but can still use Fire Blast.
Hypno	Poliwag		Water			Hypnotic Ability, more emphasis on debilitation.
Burrow	Pinsir		Bug/Ground		Prefers to ambush from underfoot instead of chasing down prey.