"Nintendo Bros.: Heil Mario!"

This black-and-white animation, made by Jim Reardon (notable for Bring Me the Head of Charlie Brown, another bootleg parody short in B&W) in 1988, features Mario, Luigi, Link, and the Mushroom People to defeat King Koopa and the Adult Mutant Ninja Hedgehog, Sonic. Instead of fireballs, the weapons are now guns.