Bowser

Bowser Is Antagonist From Mario Series.

Super Mario Bros.
The first appearance of Bowser in the original Super Mario Bros.

Release-wise, Bowser first appears in Super Mario Bros.. Bowser and his army invade and conquer the Mushroom Kingdom, using a spell to transform the citizens into inanimate objects as well as kidnapping the only one capable of undoing the curse, Princess Toadstool. Bowser's attack pattern is similar to that of his impostors; he sits on the bridge spitting fireballs and tossing hammers, as well as leaping into the air. Grabbing the axe on the other side of the bridge causes him to fall into the lava, defeating him and saving Princess Toadstool.

In addition to the original game, Bowser appears in all the game's variations, including Super Mario Bros. Special, All Night Nippon Super Mario Bros., VS. Super Mario Bros., Super Mario All-Stars, and Super Mario Bros. Deluxe.

Super Mario Bros.: The Lost Levels
The return of Bowser in World 8 of the Super Mario All-Stars remake of Super Mario Bros.: The Lost Levels.

Bowser repeats his plan in Super Mario Bros.: The Lost Levels, using black magic to transform the kingdom's inhabitants and kidnapping Princess Toadstool. He holds her in his own castle while the Mushroom Retainers are held by his impostors in the other castles. Bowser again resides in the eighth castle, with the same attacks as the original: throwing hammers and breathing fireballs at Mario and Luigi. The arena, however, is aesthetically different, having two pillars of blocks on the ceiling, the second having a Fire Bar on the end. Also in this final castle is a mysterious dark-shaded look-alike of Bowser, sometimes identified as his brother. Grabbing the ax at the end of the bridge once again causes Bowser to fall into the pit of lava, allowing Mario to rescue the princess. Bowser is later found in the castle located in World D, and the same strategy is used to defeat him.