I already explained why I like Golduck somewhere in this thread.
I basically love Primeape because when I started playing competitively in generation 5 NU Primeape was on my team and he was probably the best Pokemon of many matches with his good speed and decent attack stats. Primeape was also really funny in the anime and his design is just funny in general with the pig nose.
You may be thinking why is Charizard of all things here. Well I am probably the only one who thinks this but Charizard seems to be a bit overhated, it is either you love it or you hate it and alot of people seem to hate it just because they preffered Blastoise or Venusaur or they thinks generation 1 is overrated. Personally I like Charizard and I think people shouldn't hate on the fact that other people chose it as their first starter.
Poor Nidoqueen seems to get overshadowed by her brother Nidoking. I always preffered Nidoqueen because with the both the Nido's only having an average speed stat extra defenses can really help out. Nidoqueen also is quite strong even with base 75 special attack because of her giant movepool and Sheer Force.
I don't really know why I like Poliwrath but I do. Probably a combination of his funny design, balanced stats and being available in almost every Pokemon game, also helps that Poliwag is easily catch able and can be found early in alot of Pokemon games. However Poliwrath doesn't get alot of attention from the Pokemon fanbase which is pretty sad because it is a fun and diverse Pokemon to use.
While I am not sure if Victreebell is a Pokemon I should be putting on here because it does has alot of fans I am putting it here anyway. I like Victreebell because Sunny Day is a fun weather to abuse and Grass and Poison are some of my favorite Pokemon types. Victreebell is also a beast in Sunny Day teams because of it's high attacking stats, good movepool, Weather Ball and Chlorophyll. Bellsprout is also a badass.
People hate Exeggcutor because they are eggs, that is all the reasons most of the time and I think EXeggcutor is over hated. The Pokemon fanbase usually doesn't give Pokemon with weird designs a chance ( you will see that later on ) which I think is not a right reason to hate a Pokemon. I like Exeggcutor because it is extremely powerful with base 125 and 95 special attack and attack receptively and it is a Grass type which is my favorite type. Give this dude Leaf Storm and almost anything will die in one or two hits.
While Weezing is by no means a hated Pokemon and it does have a decent sized fan base, I am putting it here anyway. Like with Primeape I had a Weezing on my first ever competitive team and he could take hits like a boss while dealing back decent damage. Aside from that there is also Weezing's design which, while probably not something you want to smell it looks funny.
The main reason I love Tauros is nostalgia. Tauros has always been a cool but impossible to catch Pokemon but in the end was always worth it. Tauros was the first Pokemon I EV trained and while I didn't use it in my first NU team it was still a Pokemon I used when battling against friends and tough in game opponents. While Tauros like with Weezing doesn't get hate it certainly doesn't get the love I think it deserves which is why I am putting it here.
While Lanturn again doesn't get alot of hate it certainly isn't a fan favorite either. While you may think other Water Pokemon like Milotic and Slowking are better Lanturn also has an added Electric type and Volt Absorb which makes it a unique Water type. Rotom Wash kind of stole it's typing in generation 5 but Lanturn still has Volt Absorb and some support moves like Heal Bell which Rotom Wash didn't have. Lanturn also gets Sucker Punch for some reason which is weird but cool.
Ever since Drizzle has been nerfed Politoed has been somewhat uncommon in OU. Politoed is a Water type with balanced stats and a decent movepool that never really got attention until it's hidden ability Drizzle was released. However I liked Politoed before generation 5 as it was an adorable Water type with balanced stats and it had some unique moves like Perish Song and Encore. I don't really have a good reason to like politoed but dammit let me like Politoed just for the sake of liking it.
The main reason I like Forretres is because I used one in Pokemon XD Gale Of Darkness and he was a real help to the team. If my team ever got into problems I could just send out Forretres and heal up my whole team while Forretres was just sitting there taking hits and chewing on his Leftovers. Forretres also used to be good in competitive play when Defog didn't exist yet. Forretres may not be hated like other Pokemon in this thread but it isn't a fan favorite either.
People usually remember Miltank because of Whitney and that is the only reason why Miltank become one of the most hated Pokemon of all time. However ever since I saw Whitney use it I wanted one myself because it was just so annoying to face. While I never really got a Miltank until generation 4 because it was so rare Miltank still remains as a good go to Pokemon in the lower tiers for me.
While some say Qwilfish is just another mediocre fish like Basculin and Lumineon I always found Qwilfish to be a lot better than those. Qwilfish can either use Swift Swim in the rain and become a deadly sweeper or set up Spikes with it's hidden ability Intimidate. Ever since I used Qwilfish I have been fond of him and he will always remain one of my favorite Pokemon.
Even though I skipped generation 3 Sharpedo has been one of my favorite Pokemon ever since I saw it. Like with many Pokemon on this list Sharpedo isn't really hated but it doesn't get much attention which is why I am putting a lot of Pokemon on here. Sharpedo looks like one of the coolest Pokemon there is which is the main reason I like it and Speed Boost also made it OU viable which is cool.
What can I really say about Whishcash. It is a Pokemon that almost everyone including myself forgot about but I recently used it in NU and it was fun to use. Dragon Dance which it gets for some weird reason makes this thing quite scary and with it's dual Water Ground typing and can set up a Dragon Dance without too much trouble. It may not have a great design but it is fun to use which is why I put it here.
Rampardos while not getting much hate as you have heard with other Pokemon before also doesn't get much attention which I find sad. The main reason I like Rampardos is because of it's kick ass design and huge attack stat. With Rock Polish this this is extremely good for a late game sweeper. I don't really have much to say about it other than that but I still like it.
You have heard it before blablabla not hated but blablabla not alot of attention. Anyway I mainly like Floatzel because I used one in Pokemon Diamond and it was a reliable team member. It also took down some of the scariest in game Pokemon like Cynthia's Garchomp. While Floatzel may not be that great in competitive play it is still a Pokemon I enjoy using in my Sinnoh play though's.
Mismagius is a Ghost type overshadowed by the likes of Gengar and friends. While the main reason I like Mismagius may be because of 4th gen UU I still think it is a cool looking design with good enough stats to use it. It is also one of the few Pokemon i trained to level 100 before Pokemon Black and White.
So remember with Exeggcutor where I said Pokemon got hated only because of their design, yes Skuntank is one of them. Skuntank may be a skunk but for a skunk it a quite adorable and cool looking. People hate it's design but I just really fail to see what is wrong with it's design because they made a cool looking skunk which is a pretty difficult task. Skuntank is also fun to use in NU because you can easily throw it on most teams and it will make your team better.
Bronzong has always been overshadowed by the likes of Metagross and Jirachi as a Steel Psychic type but Bronzong has always been my favorite. While it's stats may be the worst out of the 3 and it's movepool isn't anything great either it is still a Pokemon that can set up Stealth Rock, do some damage and go boom which is pretty cool. Bronzong can also be named pothead and I like naming stuff pothead.
Dammit this thing is impossible to get in Diamond and Pearl but it was worth it. Availability aside Spiritomb is a reliable Pokemon with good stats and a movepool that does what it is supposed to do. I ahev fallen in love with this thing ever since I started playing gen 6 RU and it's Calm Mind set just wrecks face because it is quite easy to set up Calm Mind and keep on setting up and Resting up if you need to.
Toxicroak is a Pokemon I briefly used in BW OU but it was never that good because I kind of sucked at competitive Pokemon back then. However when starting my Pokemon X playthough I decided to give it another shot and it really pulled through. It may have gotten nerfed this generation but I still like Toxicroak.
There is really only one reason I like Abomasnow, Abomasnow reminds me of a Christmas tree. I could already imagine myself receiving presents from Abomasnow and putting Christmas light around his neck. Joking aside Abomasnow is a solid Pokemon to use in RU and it's mega evolution make it a great wallbreaker. It's ability is annoying though if you are using it in game.
Heatran seems to get quite a lot of hate for being a unneeded and lame legendary Pokemon but I think the opposite, it is my favorite legendary Pokemon. I use Heatran on nearly all my OU teams because you can easily fit one on your team and it never gives disappointing results. Heatran is also a cool looking Pokemon with it's lava body and mean look.
People hate Cresselia for one big reason, it just doesn't freaking die. Cresselia is often one of the most hated Pokemon to face but I like to use Cresselia because it is just a sold wall. I rarely use Cresselia though because a lot of people just forfeit when they see one.
Wow this thing gets way too much hate and I don't know why. It is another Fire Fighting starter Pokemon, who cares it is a good typing and it is the most original out of the 3. It looks ugly, whatever it has a fiery beard of awesomeness and it is a badass pig. Bacon, bacon is delicious so why are you mad. While Emboar wasn't my starter in Unova it is my favorite out of the 3 and I don't think the hate it gets is justified.
Liligant is again another Pokemon that doesn't seem to get a lot of attention. While it's movepool may only be Grass, Grass, random support moves and Hidden Power it's still usable with it's solid stats. Liligant also has a neat design and it kind of looks like fruit. My favorite type is also Grass and guess what type Liligant is. All in all Liligant has alot of things I like about Pokemon which is why I like it so much. Shame it is a Pokemon White exclusive Pokemon.
Fighting Whimsicott is a pain in the butt but using one is a whole different story. People generally hate Whimsicott because it is a pain to fight which is understandable. However the support WHimsicott can give to it's teammates with Tailwind, Stun Spore, Taunt, Encore, Leech Seed and Memento is just fantastic. Whimsicott still sucks to fight though and also noobs stop suing Substitute + Leech Seed it is pretty bad lol.
Sawk is a Fighting type that is outclassed by every other Fighting type similar to Flygon and Dragon types but it is still a solid Pokemon on it's own. The only reason I really like Sawk is because I used one on my first Black play though and it was a great team member. Not much to say about it really.
Sigilyph is certainly one of the more weirder Pokemon designs but it works pretty well for Sigilyph. People might hate it's design but it looks sort of funny with the flappy wings and the Unown like eye on it's body. Sigilyph also has passable stats with a huge movepool consisting of one but not limited to Air Slash, Roost, Heat Wave, Energy Ball, Shadow Ball, Psycho Shift, Air Cutter, Psychic, Psyshock and Solarbeam. All in all Sigilyph is a cool Pokemon that just needs a little more attention from the Pokemon fan base.
One word, Defeatist. People generally don't use Archeops because of Defeatist but it just seems that people focus on Defeatist too much. Yeah sure it may not have great defensive stats but with it's high attack and speed stats it will almost never come to defeatist range because it kills to opponent before it has a chance to attack. It was the main star of my Pokemon Black team and to this day is still one of my favorite Pokemon.
Gothitelle may be ugly but if you get past that you will find a great Pokemon that just seem to get a lot of attention. Even then it's design isn't really that bad but it takes some getting used to. I like Gothitelle because of it's hidden ability Shadow Tag which is one of the best abilities in the game and makes sure the opponent can't flee the battle. Gothitelle has passable stats along with a all around good movepool which makes it a great Pokemon and one Pokemon I like.
Same with Charizard you either love it or hate it. Some people hate it because it is based of whatever something disgusting which is the main reason. However like with Skuntank it's design is good despite what it's based off. Reuniclus is also a great Pokemon as it can either set up on your face with Calm Mind or go with Trick Room and be a great sweeper.
So we are back to Pokemon that get hate because of their design again, Klinklang this time. Klinklang is one of my favorite Pokemon, no kidding because it is just so fun to use. The Pokemon fan base hates this thing because it is just a bunch of boring gears but I would say they are quite adorable and funny looking. I am training a Klinklang right now and it is a fantastic Pokemon that people should really give a chance.
Druddigon is often seen as one of the weaker Dragon types but with base 120 attack I would like to disagree. Unlike other hey click Outrage and watch me win Dragon types Druddigon is actually a versatile Pokemon. I don't have much to say about it other than it wrecks face in RU and you should try it out. Go away use it now.
Gogoat actually has a fan base and doesn't get that much hate so I am not sure if it is good on this list or not but I will go with it anyway. Gogoat is quite the versatile Pokemon as it has quite a few unique moves like Horn Leech and Milk Drink and has stats to back it up. It is fun to use and I used one in X that was really fun to use.