Bowser

King Bowser Koopa, alternatively called Lord Bowser or simply Bowser, is the ruler of the Koopa Kingdom and the leader of the Koopa Troop. His minions refer to him as "Lord Bowser" or some variation of "Your highness" that replaces the word high with a negative trait Bowser has. While the only confirmed biological relative of Bowser's is his son, Bowser Jr., Kamek raised him and continues to serve and advise him. Bowser and the Koopa Troop have tried to take over the Mushroom Kingdom many times. Bowser is known across the world for being the leader of a nation with a formidable military, as well as his monstrous appearance, frequent kidnappings of Princess Peach and his frequent conflicts with his arch nemesis, Mario. He has a group of 7 minions known as the Koopalings who are his high-ranking generals.

Early Life
The identity of Bowser's parents, and the exact time of Bowser's birth, are unknown. However, his parents were likely the King and Queen of the Koopa Kingdom at the time, as he was the prince, and he was raised by Kamek.

Super Mario World 2: Yoshi's Island
As a baby, Bowser, who was then Prince of the Koopa Kingdom, encountered the newborn Mario, as well as Yoshi. He attacked Mario in attempt to ride the Yoshi. This was the beginning of Mario's lifelong fight against Bowser.

Mario & Luigi: Partners in Time
Later in Bowser's childhood, he entered Peach's Castle and attempted to kidnap Princess Peach. Toadsworth tried to attack him, but was defeated. Mario then fought and defeated Bowser. Shortly thereafter, Shroob ships attacked the castle. Prince Bowser, along with Peach, Toadsworth, Mario, and Luigi, fled from the castle on the Koopa Cruiser. However, the Cruiser was pursued and attacked by Shroob ships. Bowser, who was in command of the cruiser, successfully destroyed all the pursuing ships. The cruiser flew over Hollijolli Village, attacked Shroobs in the village at the time, and landed in the village.

Super Mario Bros.
Bowser's first fight against Mario as an adult occured when Bowser invaded the Mushroom Kingdom, seemingly for the first time in his adult life. As part of his plan, he magically turned many of the Kingdom's Toads into blocks, and kidnapped Princess Peach, as her magic could reverse the effect. Mario, however, was able to defeat him at his castle, and rescue Princess Peach, thereby stopping his plan.

Super Mario Bros.: The Lost Levels
After this, Bowser once again kidnapped Peach and took her to a parallel dimension. He was once again defeated by Mario.

Super Mario Bros. 3
Bowser once again kidnapped Peach in his attempts to control the Mushroom World, this time taking her an island east of the Mushroom Kingdom contolled by Koopa Kingdom known as the Dark Land. He also sent Airships and his Koopalings to fight Mario, for the first time. However, his armies once again failed to defeat Mario, who reached his castle in the Dark Land. Bowser fought him once again, and was defeated once again.

Super Mario World
Bowser then attempted to kidnap Peach once again, this time while she was in Dinosaur Land. This attempt failed, in the same way his previous attempts did.

Yoshi's Safari
The Koopa King then briefly turned his efforts to conquering Jewelry Land. This plan also failed due to the efforts of Mario and Yoshi.

Super Mario Kart
Eventually, Bowser was allowed to participate in a go-kart racing competition that included Mario, Luigi, Princess Peach, and Yoshi.

Super Mario RPG: Legend of the Seven Stars
While the events begin as yet another battle between Mario and Bowser, Bowser's Castle is taken over by the Smithy Gang. Bowser and the Koopa Troop attempt to retake the castle, but fail, leaving Bowser without of any of his resources. Eventually, Bowser teams up with Mario so that he can get his castle back. He also agrees to help restore Star Road. They are eventually successful in doing so.

Paper Mario
During the events of Paper Mario, Bowser steals the Star Rod from Star Haven. He is eventually defeated by Mario

Personality
One thing you can't describe Bowser as is a quitter. This evil, intimidating, awful, and scary King of all the Koopas is a destructive person with fits of rage pumping through his veins, and who isn't gallant when it comes to his goals, always determined to crush his opponents like a bug. He is a nasty as he looks, and ugly to others. This amount of monstrous power can certainly be boasted about, and he is indeed prideful of it, calling his power unparalled with a beyond-question authority. He's even described to possess more charisma and destructive power than a trillion Marios.

His main operandi is selfish conquest, of which he has many attempts under his claws, most prominently being the Mushroom Kingdom which he likes wrecking up in order to capture Princess Peach, him dreaming to rule over it. The times he has fully invaded the Mushroom Kingdom, or atleast parts of it, Bowser has turned its citizens into inanimate objects in Super Mario Bros., and forced its Toad citizens to work for him in Mario & Luigi: Paper Jam. Other locations affected include the Sprixie Kingdom, Jewelry Land, Dinosaur Land, and many other Kingdoms Bowser trashed around to fulfill his own desires. In one case where he did successfully take over a kingdom, Bowser has removed nearly all of its culture, its origin becoming so unrecognizable that a brochure describing the kingdom believed Bowser's Kingdom was always Bowser's. Bowser's ultimate goal is to become the ruler of not just the world, but every corner of the universe.

Bowser's problems are his inability to think up the best of plans, often being content with his first few steps and taking an extended time before continuing off from that. His anger is also an ultimate factor, letting it control him and throwing fire around everywhere. One thing that really angers him, fuels him with unquenchable rage, is not being invited, such as with meetings or vacations.

Bowser is willing to set aside his destructive tendencies to save the world, though he'll grumble along the way. While he'll do the same for sporting events, he'll put his full passion inside the sport, causing mayhem and destruction along the way, sometimes being too much to handle or too baffling for other players. He's described as a megaton of a player for this reason, with historical wins under his belt. When he's outmatched all other players, he'll proudly declare the sport he's playing to be too boring. Or even when he hasn't played against other players yet, he'll boast he'll obviously win.

Other minor traits of him include having the fanciest sticker collection in all of the Mushroom Kingdom. He's also noted to show fear towards Mario's gold form, human skeleton, clowns. and Mario in only his swimming trunks.

Mario
Mario is Bowser's eternal arch-enemy, always causing him to use up all of his assets to halt his progress. When it does come to their eventual showdown, Bowser awaits him personally in order to fight him. He's Mario's greatest foe, and it's presumed their squabble to continue until the end of time. Part of his hobbies are thinking of ways to foil Mario once and for all.

Despite their bitter rivalry, he's willing to set it aside for other matters, such as the sake of the sport or saving the world. Despite the temporary alliance, he's not happy working alongside him. The sight of Mario's face will also outright spark Bowser to fly into a fit of rage, and Bowser's motivation with most sporting events are to beat Mario as a petty win against him.

Princess Peach
Bowser started kidnapping Peach to take control of the Mushroom Kingdom without anyone to save it. As time has rolled around, however, Bowser has fallen in love with her. Bowser keeps snatching Peach, and he also believes he's the only person fit to kidnap Peach. Bowser's kidnappings are, in his own way, an affectionate way of telling Peach that he loves her. In his own wishes, Bowser wants Peach to love him.

Despite his love, when Bowser's anger bubbles up, such as not being invited to meetings, Bowser will resort to insulting Peach as he does with everyone else.

Koopa Troop
Bowser is a beloved king to his minions, his unyielding determination rallying them all together for him. Despite his selfishness, Bowser takes good care of his underlings. If his minions are in danger, or sees having them turned against him, Bowser is prepared to fight against the person responsible for this.

Bowser Jr.
Bowser Jr. is Bowser's only child, affectionately called "Junior" by Bowser, and also what causes Bowser to behave himself. Bowser's responsible for spoiling him a bit too much and he knows that, believing that with enough guidance from other people, that he can grow up strong and wise.

Other enemies
In Mario Super Sluggers, Bowser has bad chemistry with everyone that lives in the Mushroom Kingdom, such as Toadette and Toadsworth. In the same game, he also has bad chemistry with King K. Rool.