"Wow, this Pokemon is more useful than I thought"

[Charizard★]

I've just started using Garchomp and I have to say its impressing me so far xD

[Season]

Kecleon has been my favorite Pokemon since the moment I laid eyes on it. I added it to my Pearl team mostly for mascot purposes. It wasn't until much later that I realized he's an intense fighter. I could probably get through every game in every generation with this Kecleon alone. It's movepool is incredible and allows it to learn a bunch of elemental attacks, all of which are very helpful.
I wasn't expecting much in terms of fighting because of all the negative things I heard about him on Pokemon websites. I'm happy I looked past it though, my little Kecleon is my pride and joy. ^-^

Sentrets are oddly powerful as well. I added one to my team because I thought they were adorable, but it turns out he can really hold his own in battle. I'm thoroughly impressed with this little guy.

I added a Cherrim to my team, very, very recently. I wasn't expecting much, just a cute little Pokemon to have around. I guess a lot of Pokemon rating websites sort of scared me off. I have yet to see this thing faint, he sweeps through battles where all the Pokemon are much higher levels than he is. It's incredible and nothing like I was expecting.

[InvisibleGoldenBulbasaur]

Whiscash. I raised one as a poor man's Swampert, because I couldn't find my link cable. It ended up destroying a friend's team. (Salamence, Exeggutor, Registeel)

Farfetch'd. They must have it out for this little guy, but it's my favorite joke pokemon/HM slave. It's like a Swiss army knife. It's good in the field, but God help you if you bring it to a knife fight.

Hitmonchan. Iron Fist is cool. I named mine Little Mac. ROOT FOR THE UNDERDOG!

[GlitchCity]

gallade, it has really proved itself to be really useful throughout the game

[ddemetrius456]

Pokeman....Pokeman... i love them very much

Hi,
Nice tips for newbie thanks for sharing…

[Fire Eagle]

At first, I thought Bidoof was useless, but now since I put him in a three versus three match online, Bibarel is very useful.

[Meepman]

I never new dragonite was that strong until I OHKO'd an entire team on wifi with it. I also never thought wobbufet was strong in ruby but then I OHKO'd groudon and I'm like O_O

[The Girl Once named Tracie]

probably my Koffing, and Vulpix. I caught both of them just for my pokedex, but they turned out to be awesome in battle! When Koffing became Wheezing, he was even better, and now he is on my team almost all the time

[Charmageddon]

Tentacruel. I'd only known him as an annoying jellyfish that popped up and annoyed you for a bit until I used him in my Water monotype challenge, and he's an absolute beast! He's fast, has reasonably high special and bulky enough to take several hits. The star of my team, it's turned out.

[PhantomDraco]

For me it was Steelix. I always thought of it as an annoying thing you met in caves, and that was pretty weak. But I found out it is a useful HM Slave, and even as a slave, can still hold his own in battles.

[Don'tRunWithScizor!]

Lapras is a surprise I've found recently. I run a bulky BoltBeamer set on it, and it's great.
I never realised how well it takes Special hits.
Oh, and Perish Song is fun to use (:

[Klofkac]

Ahem... Um... ... ... ... Togepi! His metronoma and hustle = FUN

[XxDawnfanxX]

When I caught a Parasect in a bug catching competition in Pokemon Blue, I was like "Wow I am never going to use this," and I ended up giving it a really good move set and had a good battle strategy and it ended up helping my team a lot, it came as a shock.

[SilverStilletto]

Dustox... on me last playthru of Ruby, i would have NEVER gotten thru Dewford without it. gust saved me from defeat (... what? how was i supposed to know flying was good against fighting?)

[Pokeyomom]

Tropius. It can learn it's share of HM's=)

[Kirbychu]

Originally Posted by Ev Trainer X

For me, it was Tentacruel. Tentacool was just so common when I was fishing that I much got pissed whenever I saw it. But now that I've actually trained one, I realized it was awesome special wall. It's speed is pretty good, as well.

I agree with this. I also began to love the Zubat line once they help me finally get past Gardenia in Pt.

[*~Frost Umbreon~*]

Primeape.

What went from one of the Pokemon I never cared about to one of my top favorite Pokemon. XD

And Gyarados, that thing is the powerhouse of my Platinum team right now. o.o

[Negative-Zero]

ive restarted and level all of my pokemon to lv 100 repeatedly so not much surprises me

[Chaos Uxie]

Oh yeah Swampert is my all time fav and i always use it And Gallade and scizors is sooooo fast and cool YAY!

[Pokeyomom]

Scizor shouldn't suprise you man:p That thing is a cheater! (in a good way). I think Dugtrio is also insanely useful.