New Super Mario Bros. 2: King Bowser by Legend-tony980 on DeviantArt

Bowser, Mario Wiki

Bowser (Super Mario Bros.)

Bowser (Character) - Giant Bomb

Bowser - Marioverse Wiki

Connection to games clear in Mario Bros. big-screen debut - KP TIMES

LEGO Super Mario The Mighty Bowser 71411, King of Koopas 3D Model Building Kit, Collectible Posable Character Figure with Battle Platform, Memorabilia

Bowser - New Super Mario U Guide - IGN

ArtStation - Super Mario Bros. Movie Bowser (fan made)

Mario Plush Characters Bowser Super Mario Bros Bowser Plush - Super Mario Plush Toy - Aliexpress

LEGO Super Mario The Mighty Bowser 71411, 3D Model Building Kit, Collectible Posable Character Figure with Battle Platform, Memorabilia Gift Idea for Fans of Super Mario Bros.