Bowser

King Bowser is the supreme king of the Koopas and is Mario and Luigi's most frequent arch nemesis. Repeatedly he tries to kidnap Princess Peach and take over the Mushroom Kingdom.

Super Mario Bros.
Bowser first appeared in Super Mario Bros. for the NES. He kidnapped Princess Toadstool and took her to the eighth castle. The other seventh castles contained Mushroom Retainers.

Super Mario Bros. 3
Bowser did not appear in Super Mario Bros. 2 - however, he returned for Super Mario Bros. 3. This game introduced Bowser's seven children, the Koopalings - Ludwig Von Koopa, Lemmy Koopa, Roy Koopa, Iggy Koopa, Wendy O. Koopa, Morton Koopa Jr. and Larry Koopa. Each Koopaling conquered one of the kingdoms of the Mushroom World by transforming the king of each kingdom into an animal, and Mario had to defeat each one to obtain the Magic Scepter to return the Mushroom Kings back to normal. Bowser kidnapped the princess in this game as well, and of course, Mario rescued her.

Super Mario World
Bowser and the Koopalings reappeared in Super Mario World. Not only did Bowser kidnap Princess Toadstool, but he also kidnapped several Yoshies, who Mario, Luigi and a few Yoshis, freed by defeating each Koopaling. At the end of the game, the Yoshi Eggs the baby Yoshies were trapped in hatched.

Super Mario World 2: Yoshi's Island
Bowser appeared as a baby in Yoshi's Island. For more information, see Baby Bowser.

Super Mario RPG: Legend of the Seven Stars
Bowser actually joined Mario's team in Super Mario RPG. Since Smithy had stolen his castle, there was no reason not to help Mario defeat Smithy and his weapons. He used Chain Chomps and his claws as weapons, and his special moves often involved summoning his minions to attack.

Super Mario 64 and Paper Mario
Bowser kidnaps the princess once again in Super Mario 64, and as usual, Mario stopped him. He did the same thing in the second Mario RPG, Paper Mario (Nintendo 64).

Luigi's Mansion
Bowser didn't appear in Luigi's Mansion for the Nintendo GameCube - instead, King Boo used a Bowser suit to fight Luigi. After a spiked ball was thrown at the head, King Boo was exposed and Luigi could suck him up with his Poltergust 3000.

Super Mario Sunshine
Bowser and his son Bowser Jr. appeared in Super Mario Sunshine. Bowser Jr. was at first disguised as Shadow Mario, but he is later revealed to be Bowser Jr, Bowser's 8th child. Note that Bowser Jr. is not Baby Bowser or Koopa Kid (see Bowser Jr. for more information).

Mario and Luigi: Superstar Saga
Bowser helped Mario again in the third Mario RPG, Mario & Luigi: Superstar Saga - but not for long. Bowser takes the brothers on the Koopa Cruiser to BeanBean Kingdom, but the Koopa Cruiser is brought down by Fawful and Bowser is shot out of a cannon by a toad. The next time the Mario Bros. see him, he has amnesia and is working for Popple, the Shadow Thief, by the name of Rookie. Mario and Luigi fight Rookie and Popple twice in the game before he regains his memory just in time for Cackletta to posess his body and become Bowletta. Bowletta kidnaps Peach, which leaves Mario and Luigi with the task of rescuing her by defeating Bowletta, who has teamed up with the Koopalings. After defeating Bowletta, tje bros. are taken into her stomach to fight Cackletta's spirit for the final battle. With her destruction, Bowser returns to normal.

Paper Mario: The Thousand-Year Door
Bowser also appeared as a sort-of-villain in Paper Mario: The Thousand-Year Door. He tried to collect the Crystal Stars before Mario, but he didn't collect any of them. Players controlled Bowser for short periods of time at the end of each chapter (excluding the final one).

Quotes

 * "I am Bowser, buisnessman of legend! Fear my accounting!"
 * "ARRGH! Those Mario Bros. are the most annoying brothers of all time!"
 * "Like the moon over The day, my genius and brawn Are lost on these fools."
 * "Great, just great. Now I look like the King of GUYS WHO TALK TO POSTERS!"
 * "Welcome. No one's home! Now scram--and don't come back!"
 * "Who were you expecting? The Tooth Fairy?"
 * "This is gonna be excellent!"
 * "He who koops and runs away lives to koop another day!"
 * "I'm back! And so is 'Captain N & Super Mario Bros. World'!"
 * "PTEWWW!! What is this?!!!! I didn't order Koopa Kola Plain--I wanted Koopa Kola Crunchy!!!"
 * "Scram, pests, or I'll call an exterminator!!"
 * "Koopa Sez, everybody go to the Dome Castle, and get Mario and Luigi, and bring them to me!"
 * "Stand still so I can squash ya, you little vermin!"
 * "If Mario doesn't find these Star things, I'll have the princess, but I can forget about my castle... Can you run that past me again?
 * "Me, nice? I've never been nice in my life! I'm allergic to nice!"
 * "The courage beyond compare, the bravery beyond description, I praise this great hero, the superior fiend... me."
 * "If I didn't deserve this, I wouldn't give it to me."
 * "I haven't done anything really rotten in a long time, not since yesterday."
 * "Last one into the cave is a goodie-goodie!"
 * "No one asks for a trap faster than a plumber!"
 * "Don't interrupt me, not while I'm boasting and gloating!"
 * "OK, that does it! You're all gonna be Koopatized!"
 * "There'll be other crooked races, and other ways to cheat!"
 * "Don't question my orders, you rotten rodent! Just do it!"
 * "Stop wisecracking, mushroom, or I'll turn you into soap!"
 * "I pledge allegiance to Kootie Pie and the repulsiveness for which she stands..."
 * "With the power of the Star Rod, I can finally have everything I've always wanted!"
 * "Fool! Those pinhead plumbers are bound to try to rescue Princess Toadstool, and I intend to capture them before they do."
 * "This is easier than talking Kootie Pie into a shopping spree!"
 * "All right! Come and get your burgers!"
 * "We're gonna celebrate the capture of those faucet freaks by letting me win a baseball game."
 * "NO!!! It's a chain reaction!!"
 * "We never would've lost if you Koopaling clowns had just tried to wake me up! Whose idea was this midnight attack?!"
 * "Get off my throne, you ugly upstick!"
 * "The bridge is down, but we'll find a way to get back in. Move out, on the double!"
 * "Patience, my little chickadees. Egg Scoopa Koopas for everyone, cash in hands, of course."
 * "Well, hello there! Give your uncle a big kiss! (kisses baby, who hits him with rattle) Ow! Why you-- uh, you sweet little thing you! (kisses baby again) Yuck! I hate mushroom brats!"
 * "Ta ta, turtle dove, until next week. Here's a smooch for your sweet cheek!"
 * "Oh no! I can't believe I left my secret diary lying out! It would be totally embarrassing if someone were to read that thing. Wuh... wuh... WHAAAT?!! What's the princess doing here?"
 * "I should never have quit my day job!"
 * "Will someone get me a drink without little paper umbrellas??!"
 * "Are my dinosaurs in for a treat! Kinda high in cholesterol, but I'm sure they can handle it!"
 * "I guess I'm not a good guy."
 * "[Mario] always defeats me... This time I became invincible and I STILL couldn't beat him!"
 * "My beautiful fortress! And I was going to conquer the world on Tuesday!"
 * "Remember, 'Oogtar' spelled backwards is 'rat goo'!"
 * "I had so much fun as your crooked judge I decided to become your cruel warden!"
 * "Ohh, I hate it when my tootsie-wootsies get wet!"
 * "I wonder if I can put Lemmy up for adoption?"
 * "Eight Egg Scoopa Koopas coming up! Cook 'em good! No one likes runny eggs, dinobrain!"
 * "Hey, don't forget the special Scoopa Sauce. A little scoop'll do ya, haha!"
 * "How can I plunder your kingdom if I don't get my beauty rest!?"
 * "Happy? Imposter! I never use the H word."
 * "Top this, turkey-mouth!"
 * "My ol' pop used to say in situations like this - 'Son, when you put your mind to it, there's no problem big enough to run away from'!"
 * "Hey, what are you staring at? Haven't you ever seen a reptile ready to conquer the world?"
 * "King Bowser Koopa is nobody's fair game!"
 * "So now Toadstool and I are allies! I'll never live this down!"
 * "Go clean your room! And you'd better do it! Stop pinching your little brother! Don't be a brat! Turn down your stereo! Pick up your socks! Close the door! Get off the telephone!"
 * "Gimmie back Hip's Magic Wand! It's Koopa property, and it's rightfully mine!"
 * "It's not neat stuff, you nincomkoop! It's the same trash we had before! Now get rid of it! And this time, see that it doesn't come back!"
 * "HAHAHAHAHA! This is Koopa-riffic! I can do even more bad in my Doomsub that in my Doomship!"
 * "STOP! YOU'RE NOT SUPPOSED TO OPEN IT TILL CHRISTMAS... (BOOM) ...morning."
 * "Quiet, Koopalings! I'm the king here! I'll decide what land we're gonna take over!"
 * "It's a dirty job, but somebody gets to do it!"
 * "Kooky, what are you doing? I'm your dear old King Dad!"
 * "I'LL GET YOU FOR THIS, MARIOOOOOOOO!!!"
 * "Knock it off, knuckleheads! I'm not doing exercises, I'm having a temper tantrum!"
 * "Clams, coins, old socks, we're given' em away!"
 * "You will grow up to be sneaky, two-faced, cheating illiterates, just like your dad!"
 * "HIP! HOP! GET IN HERE! I'LL SEND YOU TO SCHOOL! Gladly."
 * "Watch it soldier, when I want my feet licked, I'll ask for it! I want my feet licked."
 * "If I want something, I'll just take it!"
 * "I wouldn't do that, plunger-face, not if you want to see your precious princess again!"
 * "Time out on the tongue department, Big Mouth!"
 * "I just got this clunker back from the repair shop!"
 * "The Real World's got seven continents, and I'm givin' one to each of you to do with what you like! Bully, you get to be the beast of the east in Asia! Cheatsy, you show how low you can go, down under, in Australia! Kootie Pie, show the Old World some newer nastiness! Go be a plague in Europe! Kooky, go wild in Africa! Big Mouth, blow your hot air all over Antarctica! Hip, rediscover North America! Be rotten from sea to shining sea! Hop, lambada South America! Give the Real World a Kooping it'll never forget!"
 * "And I'm gonna destroy you miserable little meddlers! (fiddles on his control panel) Drat! Where is that 'destroy-you-miserable-little-meddlers' button!"
 * "Plug your ears and watch your rears!"
 * "Now you'll see why I modestly call myself a genius."
 * "That's a cruel, rotten, disgusting idea - and I love it!"
 * "Hey! Who's been foolin' with my wands?"
 * "I'd love to save you, kids, but I just remembered I have a tail-styling appointment in another warp zone!"
 * "Costumed plumbers at your service, ma'am! We make plumbing a party!"
 * "Keep your crown on! You want people to think I'm marrying a nag?"
 * "Pbbbthbtth! Am I Mario's baby-sitter? I don't care what he's doing! Are you going to call me every time that guy blows his nose, or what? Sheesh!"
 * "AIRHEAD!!! A picnic?!? You MORON! This is no time for fun! See, THIS is why my evil plans always derail! Because you clods always goof off! AAARGH!"
 * "Under NO circumstances is ANYONE allowed to kidnap [Peach] without MY say-so!!!"
 * "Listen up, you reptile retches! Itâ€™s time to play 'Auction the Princess'!"
 * "I'm rich! I'm filthy, stinkin', mouth-watering rich!"
 * "Fire a warning shot! ...On second thought, blow the plumber-boys and the Princess right off the boat!"
 * "Well, two can play at that game! And I know how to cheat."
 * "You mean this is all?! There ain't enough gold here to bother Kooping about!"
 * "These fireballs are fantastic! Think of the destruction; think of the wreckage; think of how much this'll lower my heating bill!"

Paper Mario Stats
Max HP:
 * Round 1: 50
 * Rounds 2 and 3: 99

Attack
 * Round 1: 6/8
 * Rounds 2 and 3: 8/10

Defense:
 * Round 1: 1
 * Rounds 2 and 3: 2

Attacks: -Ring Attack: Uses the star rod to create a ring to attack Mario and his partner. Does 3 damage to Mario's partner and does 4 damage to Mario. -Claw Attack: Swipes his claw at Mario, which might poison him in the process. Does 6 damage. -Fire Breath: Breathes fire at Mario. Does 8 damage. -Ring Attack: Uses the star rod to create a ring to attack Mario and his partner. Does 3 damage to Mario's partner and does 6 damage to Mario. -Claw Attack: Swipes his claw at Mario, which might poison him in the process. Does 8 damage. -Jump Attack: Jumps on Mario, causing him to lose one of his commands. Does 8 damage. -Fire Breath: Breathes fire at Mario. Does 10 damage. -Lightning Slam: Causes lightning to strike Mario. Does 10 damage.
 * Round 1:
 * Rounds 2 and 3:

Tattle:
 * Round 1: It's the Evil King Bowser! Finally, after all this time! He has a huge arsenal of attacks, from blowing clouds of fire to jumping on us. Fire Attack: 8, Stamp Attack/Nail Attack: 6 I'm sure he has other attacks that I don't know. Boy, does he look nasty! He's strong enough as it is, but I'm sure he can use that Star Rod to increase his power until he's nearly invincible. Princess Peach needs us! Let's take him, Mario!
 * Round 2: It's the Evil King Bowser! Uh... I think he got bigger. That's not a good sign... He has a huge arsenal of attacks, from blowing clouds of fire to jumping on us. Fire Attack: 10, Stamp Attack/Nail Attack: 8 I'm sure he has other attacks that I don't know. Kammy Koopa's mysterious device has somehow beefed up his power even more. That's hardly fair! You should use that Star Beam whenever he uses the Star Rod to increase his power. Oh, you already knew that?
 * Round 3: It's the Evil King Bowser! No more messing around! He has a huge arsenal of attacks, from blowing clouds of fire to jumping on us. Fire Attack: 10, Stamp Attack/Nail Attack: 8 I'm sure he has other attacks that I don't know. When he increases his power with the Star Rod, our attacks will be totally useless. When that happens, you must use our ultimate weapon, the Peach Beam!  It has the power of everyone's wishes! This is our time, Mario!  Let's take this chump!  We're coming, Princess!

Paper Mario 2 Stats
Glitz Pit Battle

HP: 30, Attack: 3, Defense: 1

Tattle: That's Bowser! But what's he doing here?!? My mind just blew a fuse! Max HP is 30, Attack is 3, and Defense is 1. He's uglier than I expected. He's got a poisonous bite, so watch out! It'll make your HP decrease gradually. Also, if he ground-pounds you, you won't be able to use one of your commands! Just focus your attention on beating him down, Mario!

Palace of Shadow Battle

HP: 70, Attack: 7, Defense: 2

Tattle: That's Bowser, genius. You've only fought this guy like, a bazillion times. He'll keep kidnapping Peach, and you'll keep fighting him, until the end of time, I think. Max HP is 70, Attack is 7, and Defense is 2. In addition to his fire breath, he jumps on you and bites. If you get jumped on, you'll be unable to use a command for a little while. Oh, and his bite sometimes poisons you as well. I don't know what Bowser's doing here, but we gotta defeat him quick!