This one has probably been done to death in months past, but I haven't seen it since I started posting here.
That being said, top 10 favourite Pokémon, GO!
My list probably isn't too impressive, but hey. I've got my reasons.
10. Ambipom
Funny thing. I hated Aipom when I first saw it in G/S. I hated it even more when I saw it in Pokemon Stadium 2. What an ugly creature. Fortunately, the anime makes everything better. When Ash got an Aipom and D/P was around the corner, I wondered what the evolution would look like. I think Ambipom looks way better than Aipom, and the way it battled in the anime won me over. Loved using Fake Out and Life Orb too. Oh, if only I had more room for Pokemon...
9. Cyndaquil
The porcupine is my favourite animal. Long story. I just love this guy. He just looks really awesome. I like Quilava and Typhlosion too but Cyndaquil is just...fsdshbdlkbld.
8. Espeon
Pretty elegant and it was my Eevee of choice in G/S. I felt even better knowing that Red has his own Espeon. In truth, 8 and 7 are pretty much the same for me...
7. Vaporeon
In Blue/Yellow this was my Eevee of choice. Nowadays, Vaporeon is still pretty amazing. Unfortunately, another Water type is my absolutely favourite, and not for its stats.
The remaining 6 are my dream team, and I like almost every member of their evolution lines.
6. Tepig/Pignite/Emboar
I wish Emboar's stats were better.
Well, actually, I could say that for all three Unova starters. I really do love the design of this Pokemon though. Actually, I think it's the first time Ken Sugimori discussed what they did with the starters in detail (the inspiration being Japanese/Chinese/European designs) which could be another reason why I love these three so much. When the final evolutions were first revealed, I think Emboar was the first one I was okay with. I'm not sure why, but it just felt right. I'm with everyone else on the Fire/Fighting typing, but this guy is definitely an awesome design.
5. Snivy/Servine/Serperior
This guy is just awesome. Serperior was especially a surprise to me. I've never really liked any of the previous snake Pokemon, but Serperior makes sure that you know he's a boss. Well, I wish his stats reflected that a bit more, but I can deal with it. Like Tepig, I feel like Snivy's "royalty" aspect doesn't really come into play until the final evolution. Nonetheless, Snivy and Servine are solid designs too. I hope for good moveset additions in Black & White 2 (same for Tepig's line).
4. Oshawott/Dewott/Samurott
I'm a HUGE samurai fan. I love samurai to death. I was always hoping for a samurai Pokemon and I finally got one--as a STARTER too. I have to admit, I kind of like Oshawott and Dewott's design more than Samurott. When the starters' final evolutions were leaked, I hated Samurott like crazy. "How could Mijimaru evolve into that thing?!" Even when the game was released, I was still iffy about it until that Pokemon Center poster came out with him taking his shell blade out of his armour. I could finally respect the design. I'm just really glad that a samurai Pokemon finally exists.
3. Solosis/Duosion/Reuniclus
This thing is damn cute. I mean, holy crap. Not only is it cute, but its stat distribution is GREAT. It can take hits, it can dish out nice damage, it has Magic Guard...ugh, just perfect! I was a bit concerned since I've never used such a slow Pokemon before, but there was no need to worry. Its voice in the anime is kind of weird, though...
2. Togepi/Togetic/Togekiss
When I first played Gold, I beat the game with only two Pokemon: Typhlosion and Togetic. Thanks to the anime's influence, I treated my Togepi with absolute care. Togetic weirded me out a little, but it was okay. I didn't use Togetic in 3rd gen because I didn't like 3rd gen very much, but when Togekiss came around I was shocked. "Togetic actually got an evolution? It's so odd, but I LIKE IT." An airplane thing! And it was amazingly strong! Serene Grace! Flinchkiss, YES. I think like my number 1, Togekiss probably has an automatic spot on my team. I really like it that much.
1. Pikachu
Yep, a Pikachu fan since I first played the game. Actually, to be honest, what really made me a Pikachu fan was the first episode of the anime. I'm not sure how to describe it. The first Pokemon episode is one of the best first episodes of any show I've watched. It felt genuine. The moment with Ash defending Pikachu from the Spearows, and the end of the episode making it feel like a really epic adventure was about to start...it was amazing. Since then I got Yellow, got the Pikachu N64, mained him in every Smash game and I've used him in every generation. Sorry Raichu fans. =( Light Ball forever!