Bowser, also known as King Koopa, is the main antagonist of the Mario Universe and the final boss of many games in the franchise. He is the King of the Koopa, but many other species obey him to help him conquer the Mushroom Kingdom. He has a son named Bowser Jr..
His main activity is kidnapping Princess Peach to take over the Mushroom Kingdom, which makes him the main enemy of Mario and his friends.
He first appeared in Super Mario Bros. in 1985 as the main antagonist. It will be found in almost all the games of the license such as Mario Kart, Mario Tennis, and many others.
Bowser is, in most games, a selfish, cruel, brutal, power-hungry being, even to his own troops. He is a feared and respected character who does not hesitate to set a number of deadly traps to achieve his ends.