final smashes in a nutshell::
Mario - his giant fireball attack
Yoshi - He grows wings which enable him to fly about and shoot fireballs
Peach - She makes everyone on the screen go to sleep, plus peaches get dropped which can heal hp
Bowser - Turns into Giga Bowser
DK - Gets his bongos and plays them which will hurt any other people around him, at the end his charge for his fist attack is at max
Diddy - Gets his barrel jetpack and his peanut popgun out and flys around the stage. By the looks of his, he is gonna be one of the hardest to control of the flying smashes
Wario - Turns into WarioMan which gives him a new set of moves
Pikachu - Peforms quick attack which enables him to fly around the stage
Pokemon Trainer - Gets all three of his pokemon to attack, the screen also says ' its super effective'
Pit - Summons centrutions will attack the other players
Samus - Peforms a powerful blaster attack. At the end, she will turn into Zero suit samus
ZS Samus - A electric charge will surround her and will turn back into armoured samus agian
Kirby - Sends all the other players into a cooking pot which will attack them
Meta Knight - Attacks the player with darkness and his sword. This FS has to hit someone to work
DeDeDe - Summons waddle dees, waddle doos and gorods(dunno real name) these ones will attack alot more faster than normal
Toon/Link - Does his triforce attack on one player
Zelda/Shiek - Attacks using her light arrow
Fox/Falco/Wolf - summons there landmasters
Ice Climbers - Summons a giant iceberg which can freeze other players. IC can walk normaly
Olmair - Him and his pikmin will get into there ship which can ground pound anyone nearby. Ship will go into the sky and enimies from the pikmin games will attack the other players before exploding back into the battlefield
Lucas - PK starstorm. This is diffrent to ness' FS as lucas's starstorm attacks downwards
Ness - PK starstorm. This is diffrent to Lucas' FS as Ness' starstorm attacks diagonally
Luigi - Does a little dance and anyone caught in his FS while have the sapping flower on them, fall asleep and move more slowly
C.Falcon - SUmmons his f-zero machine which will attack, have a cutscene before crashing into the other charecters
Snake - He will move to the front and shoot grenades at the other players which he can aim
ROB - Lazers will come out of his eyes in which he can attack people with
Sonic - Turns into super sonic in which he can fly attack the stage. This looks like another hard to control flying FS
Mr.G+W - Turns into the g+w octopus in which he can fly around the stage and attack people with his tentacles
Lucario - Peforms hyper beam in which he circles around the stage
Jigglypuff - S/He expands to the size of the stage to knock people off
Ganondorf - Turns into Ganon in which he knocks a player off the stage
Ike - Peforms a firey uppercut on one player before crashing them back to the ground
Marth - [ i dont understand his fs sorry ]
If you wanna see them in action, visit this link::
uk.youtube.com/watch?v=2HU_AJbx10Q
