From the earliest moments, I had no idea who was voicing any of the characters. But I did know this: When the villain, a gigantic fire-breathing horned turtle named Bowser, showed up in his studded-leather arm bands, lowered his fire-red eyebrows into a gleaming, gap-toothed grin of the most insidious megalomania and began to push and order people around, all I could think was, “I like this dude.”
Source: ‘Super Mario Bros. Movie’: Bowser Is Jack Black’s Finest Role in Years – Variety