This game has more initial characters than the original had with all the characters. Here I'll post a brief description, the official picture and the B attacks for the characters.
Known worldwide as Mr. Nintendo, Mario uses his incredible jumping ability to thwart the evil Bowser time after time. While he's best known as a hero, Mario has played many roles, including racer, doctor, golfer, and villain. His tastes have changed after 20 years of gaming; he long ago swapped the colors of his shirt and overalls.
B=Fireball - shoots a fireball
B-forward=Cape - turns other characters around (reflector)
B-up=Super Jump Punch - uppercuts any enemies in range (3rd)
B-down=Mario Tornado - pulls in nearby enemies, spins them silly, and launches them away
While he now prefers the laid-back jungle lifestyle to construction site mischief, DK is often forced back into the action by the Kremling Krew. The great ape is quite fast despite his burly physique, and he keeps his strength up with a steady diet of hid favorite food: bananas. His one extravagance (and only piece of clothing) is a monogrammed necktie.
B=Giant Punch - a super punch (charge)
B-forward=Headbutt - grounds an enemy so they won't fly
B-up=Spinning Kong - spins around slapping nearby enemies (3rd)
B-down=Hand Slap - slaps the ground with his hands (rapid)
Even in his youth, Link was already a becoming the warrior who would carry out the destiny of Hyrule (and many other lands) on his shoulders. His epic struggles against the forces of darkness are written in legend, and he is bound to the Princess Zelda and the archfiend Ganondorf by the awesome power of the Triforce.
B=Bow - shoots an arrow (charge)
B-forward=Boomerang - throws a boomerang (smash)
B-up=Spin Attack - spins sword attacking all enemies in range (3rd)
B-down=Bomb - pulls out a bomb (NOI)
This intergalactic bounty hunter's full name is Samus Aran. Clad in a Power Suit made by the Chozo race and infused with their enhanced blood, she cleared the planet Zebes of a Metroid infestation. Samus is an orphan, the sole survivor of a Space Pirate raid that destroyed an Earth colony named K-2L.
B=Charge Shot - shoots an energy sphere (charge)
B-forward=Missile - home in on enemy (smash)
B-up=Screw Attack - jumps up spinning fast (3rd)
B-down=Bomb - drops a bomb
Yoshi's are gentle, fleet-of-foot dinosaurs that make their home on the idvllic Yoshi's Island, they come in a variety of colors and have evolved an interesting trait to help increase their numbers: thy can transform anything they swallow into an egg. With adhesive tongues and bottomless bellies, Yoshi's have been known to eat anything.
B=Egg Lay - swallos an enemy, and lays them as an egg
B-forward=Egg Roll - spins around in an egg shell
B-up=Egg Throw - chucks an egg
B-down=Yoshi Bomb - jumps up and drops straight down
A denizen of the far off, peaceful planet Pop Star, Kirby became a citizen of Dream Land after defeating King Dedede. Even though he's only about eight inches tall, Kirby is an extremely skilled technician. He has the unique ability to absorb the powers of his enemies, and his elastic body makes him a versatile adventurer.
B=Swallow - swallows enemy. (A) spits enemy out (B/down) swallows enemy, copying enemies B-move
B-forward=Hammer - slaps enemy with a hammer
B-up=Final Cutter - jumps up, then straight down with a blade (3rd)
B-down=Stone - transforms into a stone
Fox McCloud is the leader of a band of adventurers-for-hire known as Star Fos, Fox and his fellow pilots Peppy, Slippy, and Falco patrol the Lylat System in their mother ship, the Great Fox. From the cockpit of his Arwing, Fox leads the ceaseless pursuit of the evil scientist Andross, who doomed Fox's father.
B=Blaster - shoots laser, but doesn't stop the enemy (rapid)
B-forward=Fox Illusion - runs at super speed (3rd)
B-up=Fire Fox - launches himself with a flaming barrier
B-down=Reflector - (reflector)
It's safe to say that Pikachu is the most famous and popular of all Poke'mon. It has electric pouches in both cheeks: when in danger, it shoots electricity at it's enemies. Although Pikachu can evolve into Raichu by exposure to a Thunderstone, many trainers like Pikachu so much that thay don't let it evolve.
B=Thunder Jolt - shoots a moving jolt of electricity
B-forward=Skull Bash - launches itself head first
B-up=Quick Attack - flys through the air fast (3rd)
B-down=Thunder - a thunderbolt falls onto Pikachu
Ness is a young boy who's mastered the phychic power known as PSI. Ness was living a normal life in the suburbs of Onett until a meteor crashed into a nearby mountain and sent him on a wild adventure. Believing in the ultimate powers of wisdom, courage, and friendship, Ness proves that some heroes come in small packages.
B=PK Flash - powers up a flash of PSI (charge)
B-forward=PK Fire - shoots a flaming thunderbolt
B-up=PK Thunder - shoots a ball of PSI (3rd, but must hit yourself to fly)
B-down=PSI Magnet - (absorber)
Usually a relentless bounty hunter, Captain Falcon shifts gears to become a race pilot once the F-Zero Grand Prix begins. His beloved racer, the Blue Falcon, can exceed the speed of sound, and he knows how to drive it; he'll go down one of the all-time greats, now 36 years old, Captain Falcon wears his F-Zero X visor.
B=Falcon Punch - slowly strikes with a flaming punch
B-forward=Raptor Boost - hovers forward, if contact is made, upper or lowercut is used
B-up=Flaming Dive - jumps up, if contact is made, launches enemy, and can redo the attack (3rd)
B-down=Falcon Kick - hovers straight forward using a flaming kick
Koopa has a long history of kidnapping Princess Peach to lure his nemesis, Mario, into traps. He leads an enormous group of mischievous creatures, not the least of which are his seven children, with outragious strength, flammable breath, and more spikes than you can shake a Star Rod at, Koopa is a constant threat.
B=Fire Breath - blows fire, but slowly fades
B-forward=Koopa Klaw - scratches, if rapid he'll bite his captured enemy
B-up=Whirling Fortress - spins around real fast (3rd)
B-down=Bowser Bomb - drops straight down
Princess Peach presides over the Mushroom Kingdom from her huge castle. Her loyal subject Toad does his best to protect her but always seems to fail spectacularly. Besides her royal duties, Peach is interested in both tennis and golf; since she's so magnamimous, she'll even deign to play a few matches with the evil Bowser.
B=Toad Smash - pulls out Toad, if an enemy hits Toad, (counter)
B-forward=Peach Bomber - launches herself forward
B-up=Peach Parasol - pulls out a parasol and starts to hover (3rd)
B-down=Vegetable - pulls a vegetable out of the ground (NOI)
That's Popo in the blue and Nana in the pink. These two stars of the game Ice Climber have scaled many an icy summit in their mountaneering careers. Back in their glory days, they chased eggplants, cucumbers, and other vegetables that inexplicably fell from frosty summits where a condor reigned supreme. They're rarely seen apart.
B=Ice Shot - shoots a block of ice
B-forward=Squall Hammer - spins around real fast (3rd)
B-up=Belay - launches your ice climber upwards, but almost always at the sacrifive of your CPU ice climber (3rd)
B-down=Blizzard - breathes ice
The crown princess of Hyrule, Zelda entrusted Link with the future of Hyrule after a revelation came to her in the world of dreams. She knows much about the Triforce; in fact, the only person who likely knows more about Triforce lore is Ganondorf himself, whom Zelda evaded in Ocarina of Time by transforming into her alter ego, Sheik.
B=Nayru's Love - a basic attack, protects her from both sides (reflector)
B-forward=Din's Fire - shoots a small fireball, once you release B, it explodes
B-up=Farore's Wind - teleports Zelda a great distance in the direction the control stick is pointing (3rd)
B-down=Transform - become Sheik
This is Zelda's alter ego. Using a variation of the name of the antient Sheikah tribe, she appears before link and teaches him melodies instrumental to his success. It's believed that she's not just a quick-change artist, but rather that she is able to instantaneously alter her clothing and her eye and skin color by using her magic skills.
B=Charge Needle Storm - throws needles at enemy (charge)
B-forward=Chain - pulls out a whip, use the control stick to keep it moving
B-up=Vanish - Sheik disappears, an explosion occurs, and Sheik reappears in whatever direction the control stick is pointing (3rd)
B-down=Transform - become Zelda
And now, The Secret Characters, starting with...
The man in green, Luigi, is ready for action!
Although Mario's younger brother has always played secong fiddle, Luigi finally garnered the spotlight with his very own game, Luigi's Mansion. Things are looking up for the eternal understudy; he's even picked up his own rival in Waluigi. The day he's referred to as the "lean mean, green machine" may not be too far off.
B=Fireball - shoots a fireball, but unlike Marios, these fly straight
B-forward=Green Missile - launches Luigi forward
B-up=Super Jump Punch - uppercuts any nearby enemies (3rd)
B-down=Luigi Cyclone - spins around, unlike Marios, Luigi just chuckes them away
Direct from Fire Emblem, it's Marth, the swordsman supreme!
The betrayed prince of the Kingdom of Altea, the blood of the hero Anri flows in Marth's veins. He was forced into exile when the kingdom of Dolua invaded Altea. Then, wielding his divine sword Falchion, he led a revolt and defeated the dark dragon Medeus. Afterwards, Altea was annihilated by King Hardin of Akanea.
B=Shield Breaker - attacks with his mighty sword (charge)
B-forward=Dancing Blade - attacks with a mighty combo of attacks
B-up=Dolphin Slash - jumps up, attacking any nearby enemies (3rd)
B-down=Counter - (counter)
You've unlocked the singing wonder, Purin!
This balloon Poke'mon invites it's opponents in close with its big, round eyes and then puts them to sleep with a soothing lullaby. It puffs itself up when angry, and while it may look adorable, it's not to be trifled with: it knows several powerful techniques. Purin evolves into Wigglytuff after exposure to a Moon Stone.
B=Rollout - spins around (charge)
B-forward=Pound - punch, good for helping with recovery
B-up=Sing - puts nearby enemies to sleep, the more damage, the longer it will be in effect
B-down=Rest - falls asleep, but if Jigglypuff is overlapping an enemy and uses rest, deadly results
Mewtwo's mental powers are now yours to command!
A genetically created Poke'mon, Mewtwo is the result of many long years of research by a solitary scientist. Although Mewtwo was cloned from the genes of the legendary Poke'mon Mew, its size and character are far different than its battle ancestor. Its battle abilities have been radically heightened, making it ruthless.
B-Shadow Ball - throws a ball of darkness (charge)
B-forward=Confusion - throws enemy in the air (deflector)
B-up=Teleport - teleports to the direction the control stick is pointing (3rd)
B-down=Disable - if looking eye to eye with an enemy, they become fased, if used while they're fased, they get launched
Mr. Game & Watch is ready to rock, old-school style!
First appearing in 1980, the Game & Watch series is the father of all portable liquid crystal games. The main character is simple and monochrome but has a timeless individuality. There are 39 different games in the series and they've sold over 43 million units worldwide. Pictured at left is the particularly popular Fire model.
B=Chef - shoots two to five saugages into the air
B-forward=Judgement - hits with one of ten attacks
B-up=Fire - two firemen with a trampoline launch Mr. Game & Watch into the air (3rd)
B-down=Oil Panic - pick up three energy missile attacks, then release the full power of the three attacks
Pikachu's weaker and faster alternative...
Cute, cuddly...and a threat to itself and others! It's Pichu!
A baby Electric-type Poke'mon identifiable by its big ears. Pichu evolves into Pikachu. It's not very skilled at storing up electrical energy and will sometimes discharge it if jarred. Although it's small, it has enough electrical power to give even an adult quite a shock. It's often startled by its own power.
B=Thunder Jolt - like Pikachus, except it hurts Pichu when used
B-forward=Skull Bash - like Pikachus
B-up=Agility - like Pikachus, except this one doesn't harm anyone if they overlap (3rd)
B-down=Thunder - like Pikachus, except this harms Pichu as well
Captain Falcons stronger and slower alternative...
A great evil walks the Earth...Ganondorf has been unlocked!
Said to be the sole man born in the Gerudo tribe in a hundren years, Ganondorf aspired to conquer the world. He plundered a piece of the sacred Triforce from the Temple of Time when Link pulled the Master Sword from its pedestal. With the Triforce of Power in Ganondorfs possesion, Hyrule was plunged into darkness until Link and Zelda defeated the fiend.
B=Warlock Punch - like Captain Falcons, but slower and stronger
B-forward=Gerudo Dragon - like Captain Falcons, but with less range and increased strength
B-up=Dark Dive - like Captain Falcons (3rd)
B-down=Wizard's Foot - like Captain Falcons, but with less range and increased strength
Fox's stronger and slower alternative...
Star Fox's surly pilot Falco is now prepped for combat!
A Star Fox team pilot, Falco's constant air of casual indifference belies his precise piloting skills. He avoids discussion of what he did before joining the team, but many consider it likely that his past was filled with reckless behavior. He's not much for cooperation, but he does respect those more skilled than he is.
B=Blaster - like Foxs, but stops the enemy every time they get hit
B-forward=Falco Phantasm - like Foxs
B-up=Fire Bird - like Foxs, but shorter range (3rd)
B-down=Reflector - like Foxs
Mario's stronger and slower alternative...
Dr. Mario is in the house! His prescription? KOs.
Immaculate in his medical garb, Dr. Mario destroys killer viruses with his amazing vitamin capsules. With his dedicated nurse, Princess Peach, at his side, Dr. Mario spends day and night in his laboratory working on new miracle cures. Somehow, he's managed to keep up with all the new viruses that have arisen over the years.
B=Megavitamins - like Marios, but stronger and faster
B-forward=Super Sheet - like Marios, but stronger
B-up=Super Jump Punch - like Marios (3rd)
B-down=Dr. Tornado - like Marios, but launches any grabbed enemies in a random direction
Marth's stronger and slower alternative...
Roy from Fire Emblem has unsheathed his sword!
The son of the lord of Pharae Principality, Roy was studying in Ostia when the Kingdom of Bern invaded League of Lycia. His father fell ill at this time, so Roy assumed leadership of Pharae's Armies, After his fateful meeting with the Princess Guinevere, his destiny became inextricably linked with the fate of the entire continent.
B-Flare Blade - like Marths
B-forward=Double-Edge Dance - like Marths
B-up=Blazer - like Marths, but shorter range (3rd)
B-down=Counter - like Marths
Links weaker and faster alternative...
Fast, nimble, and ready to roll, Young Link awaits you!
Link's younger incarnation is often considered to be the true Link: he was a young boy in the very first Legend of Zelda game, and he has appeared as a youth in most of the subsequent games. Since his debut in the original NES in 1987, Links appearance has changed over and over again, each time adding to the mystique of his incomparable story.
B=Fire Bow - like Links, but with a fire arrow (charge)
B-forward=Boomerang - like Links (smash)
B-up=Spin Attack - like Links, but holds the target inside, then throws them straight up (3rd)
B-down=Bomb - like Links (NOI)