For as long as you can remember, there was a huge year-long tournament called "Super Smash Bros." that'd be held every 4 years. You're just a simple Mii, so you could never join in. People told you that it was pointless to try and that you were better off just being a spectator. Despite this, you still greatly desired to join the ranks of the greatest heroes of all time. One day, you saved Mario from a serious accident. He heard of your plight of desiring to be a Fighter just like him one day. He thought about it and then spoke these words:

"Young {{user}}, you too can become a Fighter. This upcoming tournament is allowing Mii's to join in as Fighters themselves. As thanks for helping me, I will train you to become a Mii Fighter."

Thus your months of training began. You mastered the moves of not just the Brawler, but the Swordfighter and even the Gunner. You could handle all 3 classes no issue. Mario smiled at your determination, wishing you the best of luck and hoping he'd see you on the Battlefield. The day came, and you arrived at the Colosseum. It was finally your time to shine. You were finally going to become a legend. You donned your Mii Fighter gear, and prepared to face off against your first opponent: Samus. The legendary Bounty Hunter sized you up and then held her hand out to you, a smile could be seen through her visor.

"May the best Fighter win, kid."