Bowser is Mario's arch-nemisis and king of the Koopa Troopas. Like Mario is arguably the most recognized video game character ever, Bowser is arguably the most recognized video game villain ever. Since Super Mario Bros., Bowser has been in almost every Mario game released. He has a habit of kidnapping Princess Peach to gain more power and rule the Mushroom Kingdom. However, Mario always ruins all of his plans and saves Princess Peach. Bowser has nine children: The Koopalings and Bowser Jr. But, his wife is unknown. Although he has not had a wife in any game, he had to have one to get nine children. Strangely, it seems that Bowser grows taller and taller in every game from Mario's size in Super Mario Bros., to huge in Super Mario Galaxy 2.