Those Who Didn't Make the Cut for Super Mario Bros. Crossover

Everyone knows the wildly popular flash game Super Mario Bros. Crossover, which just added Ryu Hayabusa to the Mushroom Kingdom. But for every successful casting there area thousand rejects, as this wonderfully brilliant video from Dueling Analogs reminds.

Super Mario Bros. Leftovers [Dueling Analogs, hat tip to commenter Manly McBeeferton]