Bowser

Bowser is a character that has been in every Smash Bros. game since Melee.

In Super Smash Bros.
Bowser was planned for Super Smash Bros. 64, as stated on the Japanese website.

In Super Smash Bros. Melee
Bowser is a starter character in Super Smash Bros. Melee.

Moveset

 * Neutral: Fire Breath
 * Side: Koopa Klaw
 * Up: Whirling Fortress
 * Down: Bowser Bomb

In Super Smash Bros. Brawl
Bowser is a starter character in Super Smash Bros. Brawl

Moveset

 * Neutral: Fire Breath
 * Side: Flying Slam
 * Up: Whirling Fortress
 * Down: Bowser Bomb
 * Final Smash: Giga Bowser

In Super Smash Bros. 4
Bowser is a starter character in Super Smash Bros. Wii U / 3DS

Moveset

 * Neutral: Fire Breath
 * Side: Flying Slam
 * Up: Whirling Fortress
 * Down: Bowser Bomb
 * Final Smash: Giga Bowser