Bowser - Smash Bros Brawl Guide - IGN

Mario's had one primary nemesis since the NES days, and that nemesis is none other than Bowser. Bowser is the King of the Koopas, a race of evil turtles

Super Smash Bros. for Wii U - Super Mario Wiki, the Mario encyclopedia

Bowser - Super Smash Bros. for Wii U / 3DS Guide - IGN

Bowser - Project M Guide - IGN

May 2014 - Super Smash Bros. for Wii U / 3DS Guide - IGN

Bowser (character), Neo Encyclopedia Wiki

Sonic - Smash Bros Brawl Guide - IGN

Brawl Bowser [Super Smash Bros. Ultimate] [Mods]

Mario - Smash Bros Brawl Guide - IGN

Wii - Super Smash Bros. Brawl - Bowser Trophy - The Models Resource

Baby Bowser - Yoshi's Island 3DS Guide - IGN