I don't know if someone already has one, but here's a Super Smash Bros. RPG! Here's the character creator along with my smasher.

Name: King K. Rool
Moves:
Up Special-Kleever Slash
Down Special-Cannonball Slamma
Special-Crown-erang
Chemistry(good chemistry means they're not aloud to fight through the whole RPG except near the end, bad chemistry means they can always fight):
Bad-All

PLOT:

HAL Laboratory, Inc., Nintendo, and all other creators of Smash Bros. 64 have created a new version of the game that includes [insert all Smash Bros. RPG characters here]. But now, somethings wrong with the game. Many players of the game say when they get to the Master Hand and Crazy Hand fight (Crazy Hand newly added) a strange figure appears out the window... the shape of 2 hands.... and one is twitching very very much. One player says he looked outside the window and right when Master Hand laughed on the game, he heard a second laugh outside. The army has found out about this dangerous game, too.

RPG STARTS

Rules: All players can control the ones I make (Tonya, Tyler, Austin, Dwayne, Abbie, Courtney, Denny, and so on.... just not the army dudes and the Brawlers I use).

Don't control others' characters unless you're controlling someone not in the new version or old version of the game.

No swearing at all, or your character will be deleted from the RPG.

Finally, you can only control characters from the new game IF they're yours. EX: Only I can use King K. Rool.

EXAMPLEGUY's post:

King K. Rool: Arrgh! I will kill you!

THIS EQUALS

EXAMPLEGUY's character, Examplevideogamecharacter, DELETED!

Brock: We believe this late recreation of the game has made a portal on Earth, and right now Master Hand, Crazy Hand, and possibly others are attacking Earth as we speak.

A scream is heard in the background.

Brock: Let's go check it out, Cam.
Cam: K.

They walk to the scream.

Master Hand: I will destroy you, Denny.
Some guy: HELP!

Snake appears and fires a missile at Master Hand, making him drop Denny and leave.

Brock and Cam: Whoa! Is that.....

Snake goes under the box.

Brock and Cam: I'd recognize that horrible box disguise anywhere. It's Solid Snake!

Snake: Colonel! I've reached a strange place... 2 guys are here.... well one guy and one girl.
Colonel: This is the real world, Snake. Meet me at the Vicks' house.

At the Vicks' house....

Austin: AAHHH! Who are you?
Colonel: Relax.... it's me. Don't you play MGS?
Austin: What's MGS?
Colonel: Guess not. C'mon. Follow me you four.

Austin, Dwayne, Courtney, and Abbie follow the colonel to the Chambers' house.

Tyler: Hi! You're the colonel in Metal Gear Solid, right?
Colonel: Yep! How'd you know me?
Tyler: I've seen a Snake commercial. Come in. You're just in time to see my new version of the Smash Bros. game!
Colonel: Alright you four. When he starts Adventure Mode, look out that window.

Tyler starts the game and suddenly King K. Rool appears outside the window. King K. Rool is seen jumping on a Goomba in the Mushroom Kingdom II taken from SSBM. In the game, Tyler is also fighting in the Mushroom Kingdom II. TIME FOR SOMEONE ELSE TO CONTINUE THIS RPG!