Sorry for not updating sooner. I was too sick to use the Internet for a few days, then I just lurked around my favorite fandoms until now.
I wrote this fic back in May of 2014. I'll admit I lazily ripped most of it (except the ending, which I changed before posting) from an old SMG4 video.
Mario and Luigi sat on a bench next to a busy street near Princess Peach's castle, the illustrious building visible in the distance. Dozens of Toads passed by the two plumbers, who were extremely bored, as well as dissatisfied with their lives. After a short while, Luigi turned to his older brother. "You know what, Mario? I'm sick and tired of doing the same old stuff, day after day… What's the point of it all?"
"You're right, Luigi. What do you think we should do about it?"
Luigi looked around at the passerby in front of them, a strange grin growing on his face. "Take out a Fire Flower, Mario," he commanded. Mario pulled a Fire Flower out of his pocket and held it up.
"Eat the Fire Flower, Mario." Mario gulped down the Fire Flower in one bite, transforming into Fire Mario.
"Unload on these Toads, Mario, unload!"
Mario let out a piercing war cry as he shot numerous fireballs out of his hands, incinerating all Toads nearby. Within seconds, hundreds of thousands of Toads lay dead in front of him. At this point, the flames Mario had created had spread to the nearby trees, starting an uncontrollable blaze. The police arrived a few minutes later.
"STOP RIGHT THERE!" The first cop on the scene screamed, pointing his gun at Mario. The red plumber just smirked, flames igniting in his palms. "I WARNED YOU!" The officer yelled as he fired at Mario multiple times. The bullets were largely ineffective, however, as by then, Mario had become one with the universe. Not knowing how to control his new-found power, Mario quickly collapsed on himself and died, taking all life in the multiverse with him.