I'm actually quite fond of the Evolved Starter Pokémon, as the quite alot of them rank highly in my top 10, such as Typhlosion (1), Serperior (2), Blaziken, Swampert, Charizard...
Mostly because I have very fond memories of using them in-game.
But designwise, I don't like all of them.
Bublasaur/Ivysaur/Venusaur - As mentioned above, Venusaur isn't too pretty. I'm not very keen on the grass type, specially in those days, so I didn't use them much.
Charmander/Charmeleon/Charizard - [S]The Charmeleon backsprite in B/R/Y. Eew.[S] I like them. Most of the time I picked this line in Kanto.
Squirtle/Wartortle/Blastoise - Not too fond of the canons on Blastoise's back, but I love the first two. On my first playthrough on MD, I turned into a Squirtle and I didn't evovle because I loved the Wartortle's sprite.
Chikorita/Bayleef/Meganium - As before, the grass line is not most used. Though I have to say that the anime greatly appealed for this line. Ash' Chikorita/Bayleef was adorable.
Cyndaquil/Quilava/Typhlosion - Love. They look huggable. XD
Totodile/Croconaw/Feraligatr - I never understood the torn swimsuit look for Croconaw. It looks a bit out of place compared to it's pre/evolution.
Treeko/Grovyle/Sceptile - I love Grovyle's aerodynamic design, evolving it to Sceptile was a step back. This line does have its nice points, but it's not my favourite.
Torchic/Combusken/Blaziken - Again, it's the second stage I'm not too fond of. I don't like Combusken's poofy legs all that much.
Mudkip/Marshtomp/Swampert - I was never too fond of Marshtomp's design as it looked kind of dumbwitted. Swampert's somewhat better, but Mudkip is my favourite of the line.
Snivy/Servine/Serperior - This line is my favourite of Unova and ranks amongst the highest of my favourite pokémon. I love how each one of them has personality and I can't get enough of Serperior's attitude. I like the combination of green and yellow. It's true that it'd be nice if had become Dragon typed, but that doesn't take away that I love Serperior. o3o"
Tepig/Pignite/Emboar - I used to think Tepig was pretty cute, going around claiming that I'd use him as my starter. But I was seriously disappointed by its evolutions. There's not that many ways you can go with pig-wise, but there are many more nice ideas besides a fat, flaming pig wearing a corset. I wish they'd make more Pokémon that aren't fat/have rounded bodies.
Oshawott/Dewott/Samurott - Dewott is my favourite in this line and Samurott is pretty cool, even though it looks like an entirely different Pokémon. The concept of this line is pretty neat, though.
The reason why I skipped the Sinnoh lines, is because I don't know them that well. Generally, don't like either of them, which is also one of the reasons I never really got into the Sinnoh Region.
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