My favorite Pokémon is Loudred. If I had a Loudred, I would have it follow me around all day blasting my favorite music like a boombox. Really, I like the whole Whismur/Loudred/Exploud evolution cycle, and I'm not sure why.

My Favorite Pokémon is Charizard! He is great Pokémon, if you try you can get him to level 100 (That is what I am trying to do in Fire Red.).

I'd have to choose all the water starter Pokémon in general. Tie between Squirtle, Mudkip, and Oshawott.

There's something about Lucario that just pulls me in. Maybe it's because everyone else likes him, or his addition to Smash Bros. I actually have no idea, but I love him.

My all time favorite pokemon is Lucario because I really love his aura powers and I think he's very interesting and I like his movie Lucario and the mystery of mew

Well, my alltime favorite pokemon will always be Magikarp, because after all, it's the strongest pokemon ever xD *cough cough*

Mine would be a tie between Sceptile, Aggron and Bisharp

Sceptile is an incredible pokemon and my first lv 100 pokemon
Aggron is a steel plated dinosaur that eats iron right off the ground
Bisharp is really cool 

I haven't really played Pokémon that much, I think I should get it into it. I like Charmeleon, though.

Isn't it obvious? Pikachu is my favorite.

Oh so many to choose yet so little time. Ok im going to go with a top 3 favorite theme here so work with me and my vast knowledge of pokemon (generations 1-4). Now lets start this off with # 3. Now this one has always been a favorite since I seen the movie it played in. In my opinion one of the most sturdy pokemon there are with its rock titan like body and its power house punches with the ability to knock down mountains i give you... Tyranitar! #2. Now this little guy has always been on the top of my list simply because it is awesome. Quicker then a bolt of lightning, sharper then any needle, i give you... Jolteon! Now credibly the most loved pokemon of all ( pikachu is a handicap ;p ) # 1. Now this one is a given yet is sure to get you fired up. The must have of any true pokemon team. With the will of fire and laziness only surpassed by snorlax... i give you the courageous, inspiring, and most unforgettable pokemon of all... CHARIZARD. I hope you give me your inputs on what you think of my choices =p (sorry i tried excluding legendaries just... well just because, but if so zapdos would have definitely been my #1 ) 

Starman all the way.
252 Sp Atk Evs
252 Speed Evs
Modest Nature
-Scald/Surf
-Ice Beam
-Thunderbolt
-Psychic
One of the best Special Sweepers in the game.

Favorite is undoubtedly Growlithe. I actually wore a Growlithe cosplay to an anime convention. I've always loved it and my best competitive Pokemon is Arcanine. Flare Blitz, Wild Charge, Close Combat, and Extremespeed. It can one shot a ton of major threats in competitive battling.

Their is so many different Pokemon, but I would have to personally say my all time favorite is Alakazam. I love him. He's very over powered in Special attack, but that's because he has no defense. So as long as you give him some EV's in Special Attack, and Speed, he's pretty much impossible to kill unless you have a very fast Pokemon up against him, or a dark type that can hit him with a Super Effective move. I love Physic types, but Alakazam is my favorite. All time. 

I think my most favorite pokemon is eevee Especially its Evolutions I think its Evolutions are cool I also think my 2nd favorite pokemon is Gengar With Shadow Ball Tm 30 Dark Pulse Thunderbolt And Sludge Bomb 

My favorite Pokémon is either Hitmontop or Toxicroak.

My favorite Pokemon would have to be !!!Shadow Lugia!!! If you know who/what he is then i'd like give you an imaginary bro fist. What makes him the best Pokemon is that he is a black lugia with eyes that look like 3D glasses.

With so many replies, I wonder if any have been left out?  Anywho, my favorite Pokemon is Crocanaw, just cause, hes koo.
and then Kricketune, because he shares a musical passion with myself.

I have to say I like glacion its so cool and its pretty

My favorite Pokémon would be Feraligator! It was my first starter Pokémon that I chose.
It was back in Pokémon Gold.

My favorite Pokemon is all the original 151 Pokemon, or do I have to pick just one, anyways if so my favorite Pokemon is Greninja