In Mario Superstar Baseball characters fall under 4 categories: Balance, Technique, Speed and Power. There are a total of 8 characters in each category, resulting in a total of 32 unique characters in the game. However in order to complete 6 teams of 9 characters another 22 characters where added. These characters are recolorations but have their own status for Fielding, Batting, Pitching and Running.
Each unique character has a special ability that helps them in certain situations. All characters have one, captains have two. Captains are also able to use a special kind of ball with special effects when both pitching or batting that use up Star Power which can be refilled every time a Star Chance appears: if the player's team is batting a hit will earn one Star Power, if they are pitching forcing out the player will earn it. Also fields have special points that give Star Power when touched with a batted ball.
Chemistry indicates how well two players play when in direct contact, a good chemistry will affect fielding with faster and stronger throws between the two characters and batting when one character is at bases and a good chemistry character at plate will bat better. Bad chemistry only affects fielding, charaters will throw in a wrong direction or the ball might slip from the receiving character's glove.
Star Missions are requirements that must be met in Challenge Mode and in the asigned level of difficulty or better, not in a lower level or it will not be taken in consideration. When all Star Missions are completed for one character the Star version of that player will be unlocked which allows a small boost to all the abilities. Also, if a certain character wins the title of MVP (Most Valuable Player) during an Exhibition Mode game of 3 innings a small paraghraph describing the background of that character will be unlocked.
Everyone's favorite hero. When Peach is in trouble, he always saves the day! A kart racer, tennis player, golf enthusiast, doctor... The list goes on and on, showing he's a jack-of-all-trades. His trademark Fireball will help him in his first foray into baseball.
Good Chemistry: Luigi, Peach, Yoshi.
Bad Chemistry: Wario, Bowser
Info
Star Missions
Level
Type
Balance
1) Strike 'em out!
Mushroom
Ability
Sliding Catch
2) Win MVP!!
Mushroom
Ability
Wall Jump
3) Get a Red Fireball!
Mushroom
Star Special
Fireball
4) Blast more than 2,000-points worth of Bob-ombs!
The younger Mario bro. He's a better jumper than Mario but lacks good traction. Always in Mario's shadow, Luigi tends to be low-key but is always a dark horse in athletic contests. Despite perpetually finishing second, his excellent form and green Fireball make him a force.
Good Chemistry: Mario, Peach, Daisy
Bad Chemistry: Waluigi, Boo, King Boo
Info
Star Missions
Level
Type
Balance
1) Smack a hit!
Mushroom
Ability
Super Jump
2) Win MVP!!
Mushroom
Ability
Wall Jump
3) Get a Green Fireball!
Mushroom
Star Special
Fireball
4) Make a jumping catch!
Flower
5) Score over 2,000 points and clear Barrel Batter!
The Mushroom Kingdom's princess. Mario has come to her rescue every time she's been kidnapped...which has happened no less than 10 times! Some speculate that an all-Toad security force may be the problem... She joins the game with a Heart Ball as her weapon.
Good Chemistry: Mario, Luigi, Daisy, Toad, Toadsworth, Toadette
Bad Chemistry: Bowser, Petey Piranha
Info
Star Missions
Level
Type
Technique
1) Strike 'em out!
Mushroom
Ability
Quick Throw
2) Win MVP!!
Mushroom
Ability
Super Catch
3) Get a Lovely Heart!
Mushroom
Star Special
Heart Ball
4) Strike out Bowser!
Flower
5) Pitch and bat with the Heart Ball and win the game!
Sarasara Land's princess. Mario rescued Daisy from the nasty villain Tatanga. While often compared to Peach, Daisy is both stronger and more tomboyish than her blonde counterpart. She uses a Flower Ball that scatters confusing petals.
Good Chemistry: Luigi, Peach
Bad Chemistry: Waluigi, Bowser, Petey Piranha
Info
Star Missions
Level
Type
Balance
1) Smack a hit!
Mushroom
Ability
Quick Throw
2) Win MVP!!
Mushroom
Ability
Sliding Catch
3) Get a Pretty Flower!
Mushroom
Star Special
Flower Ball
4) Drive in a run!
Flower
5) Pitch and bat with the Flower Ball and win the game!
According to Wario, he's both Mario's rival and childhood friend. (This is unconfirmed.) He actually runs his own video-game company and has produced many hot sellers. Garlic is Wario's favorite food. It may lend him his incredible stamina, which makes him excellent at daring plays.
Good Chemistry: Waluigi, Boo
Bad Chemistry: Mario, Toad, Toadette, Baby Mario
Info
Star Missions
Level
Type
Power
1) Smack more than 2 hits in a game!
Mushroom
Ability
Sliding Catch
2) Become a captain and win more than 900 coins!
Mushroom
Ability
Body Check
3) Get a Gnarly Garlic!
Mushroom
Star Special
Weird Ball
4) Get a hit with Mario!
Flower
5) Pitch and bat with the Phony Ball and win the game!
Luigi's eccentric rival. Waluigi is a hardworking player who has been training night and day to gain enough power to best Luigi. The eggplant that his Liar Ball delivers is said to have the power to make those who touch it lose their lunches.
Good Chemistry: Wario, Magikoopa
Bad Chemistry: Luigi, Daisy, Toad, Toadette, Baby Luigi
A denizen of Yoshi's Island. Mario's dependable buddy always helps him out of jams. Yoshis use their tongues to eat anything and everything. It's said that Yoshis can turn anything they swallow into eggs. On the diamond, Yoshi's fast legs and accurate tongue make him a great fielder.
Good Chemistry: Mario, Birdo, Baby Mario, Baby Luigi
Bad Chemistry: -
Info
Star Missions
Level
Type
Speed
1) Steal a base!
Mushroom
Ability
Clamber
2) Win MVP!!
Mushroom
Ability
Tongue Catch
3) Get an Egg!
Mushroom
Star Special
Egg Ball
4) Pitch and bat with the Egg Ball and win the game!
Flower
5) Reach base on a bunt with the bases empty!
Flower
6) Belt either a triple or a home run!
Flower
7) Smack more than 2 hits in a game!
Star
8) Score over 100 points in Piranha Panic!
Star
9) Cross the plate more than 3 times in a game!
Star
10) Get more than 3 outs in a game using the tongue catch!
A dinosaur that spits eggs from her huge mouth. Birdo is very particular when it comes to fashion, though her reliance on the color pink is a bit limiting. Her bow and ring are her pride and joy. Birdo's mouth has massive suction that can even catch a ball by sucking it in.
A gorilla known for raw power, DK leads a pretty carefree jungle life... unless someone messes with his bananas, in which case he just loses it. His ancestor, the original Donkey Kong, wore no necktie. His talents lie in beating on primate foes and kart-racing. Fear his Banana Ball!
Good Chemistry: Diddy Kong, Dixie Kong, Petey Piranha
Bad Chemistry: -
Info
Star Missions
Level
Type
Power
1) Crack a long hit!
Mushroom
Ability
Clamber
2) Win MVP!!
Mushroom
Ability
Laser Beam
3) Get a King Banana!
Mushroom
Star Special
Banana Ball
4) Hit a home run!
Flower
5) Score a run with a Banana Ball swing!
Flower
6) Drive in runs vs. Mario!
Flower
7) Get 3 strikeouts in a game!
Star
8) Belt more than 2 homers in a game!
Star
9) Get a runner out with a laser beam throw!
Star
10) Belt a homer with Diddy and Dixie Kong as runners!
DK's partner and buddy. Diddy's trademark is his red baseball hat. While Donkey Kong boasts incredible power, Diddy's forte is his nimbleness. Using his prehensile tail to great effect, Diddy Kong is a natural fielder who won't ever boot routine balls.
Good Chemistry: Donkey Kong, Dixie Kong, Goomba
Bad Chemistry: -
Info
Star Missions
Level
Type
Speed
1) Cross home plate!
Mushroom
Ability
Clamber
2) Win MVP!!
Mushroom
Ability
Super Catch
3) Get a Chimp Banana!
Mushroom
Star Special
Boomerang Ball
4) Pitch and bat with the Boomerang Ball and win the game!
Mario's archrival and the king of the Koopa clan. He's challenged Mario and his friends to battles countless times, but his ambitions tend to get crushed every time. His lethal Killer Ball is powerful enough to drag anyone catching it across the field!
Bowser's exuberant son. Bowser lied to him and convinced Jr. that Peach was his mom, resulting in a chaotic adventure for Mario and company. Bowser thinks the Koopa clan is in good hands with his son. He's not just powerful but also surprisingly skilled.
Good Chemistry: Bowser, Magikoopa, Hammer Bro.
Bad Chemistry: -
Info
Star Missions
Level
Type
Power
1) Smack a hit!
Mushroom
Ability
Wall Jump
2) Cross home plate!
Mushroom
Ability
Body Check
3) Get a Jr. Mask!
Mushroom
Star Special
Killer Jr Ball
4) Pitch and bat with the Killer Jr. ball and win the game!
A lively, sometimes surly mole who lives underground and leaps out whenever someone approaches his den. He usually keeps to himself but always gets fired up for a good baseball game. In fact, when he gets the ball, he almost gets TOO fired up.
A cheerful islander living on the southern paradise called Delfino Island. Piantas are said to be born on the mountains and they are distinguished by the palm tree growing from their heads. Their power makes them flashy, but they're clumsy and slow runners.
A mysterious member of a clan living on the southern paradise of Delfino Island. Nokis evolved from shellfish, and their ancestors are believed to have lived in the sea. While they are skillful and fast runners, they are hampered by a lack of power.
Princess Peach's subject. Though he tries to protect the princess from the evil Bowser, she gets kidnapped with disturbing regularity. There are many Toads who look just alike, and though they are generally small and look cute, they are actually quite powerful.
A cute Toad girl with plaited locks. Though her profile is relatively unknown, she is definitely a cheery, upbeat girl who's full of energy. Taking advantage of her fast legs and light weight, Toadette can make all sorts of difficult playes look completely routine.
Princess Peach's attendant. Though he says his life gets shorter every time Princess Peach gets abducted, he is always in good health and full of energy. While he lacks in stamina, he makes up for it by making cool plays that take advantage of his long life's worth of experience.
A resident magician of the Koopa clan. The best of the Magikoopas, Kamek, once attempted to abduct the baby Mario brothers, but Yoshi and Baby Mario thwarted his sinister plan. The magic powers of the Magikoopa wand also come in handy in the game of baseball.
Bowser's underling ghost. Behind the scary face lies a very shy soul. Look most Boos in the eyes and they'll cover their faces...but turn around and they'll attack you! Boos confuse their enemies by flickering in and out of the visible realm, appearing at inconvenient times.
The king of the Boos. The golden crown is his trademark, and while he looks similar to other Boos, it's obvious that he's much larger than the others. Not only is he powerful, but he's also a fast runner that gets his speed by hovering over the base paths.
A mutation created this boss of the Piranha Plants. Petey can fly in the air for a short while, flapping the leaves that he has developed into primitive arms. When Petey spits a ball out of his toothy mouth, it is lightning-fast.
The elder of the baby Mario brothers. After arriving in a stork-related calamity, he and Yoshi rescued his little bro. Though he's supposed to be Mario in his youth, you can play them both at the same time for some reason. He has excellent foot speed but lacks power due to his diminuitive size.
The younger of the baby Mario brothers. After being abducted by Kamek, he was rescued by Yoshi and Baby Mario. If you see him and Luigi in the same game, try to ignored the temporal paradox. Baby Luigi is quick around the bases but doesn't hit for power. He is, after all, a baby.
Good Chemistry: Yoshi, Baby Mario
Bad Chemistry: Waluigi, Bowser, Shy Guy, Boo, King Boo
A charming, masked soldier. Shy Guys used to serve an evil king named Wart, but they nowadays make a lot of cameo appearances as friendly rivals of Mario. That said, they aren't always good... On the baseball mound, Shy Guys are consistent players with a few weaknesses.
Diddy Kong's partner and girlfriend. Her trademark golden ponytail is familiar to monkey fans everywhere. Dixie Kong is just as adventurous as both Diddy Kong and Donkey Kong. Combining great techniques with fast legs, she is a very dependable player.
Though Goombas once lived in peace in the Mushroom Kingdom, they betrayed their homeland to side with Bowser. Exactly how Goomba uses his baseball gear is a bit of a mystery. Maybe you can spot the secret technique if you watch closely as he makes plays in the field...
Good Chemistry: Diddy Kong, Monty Mole, Paragoomba
A Goomba with wings. Just like Koopa Paratroopa, Paragoombas lose their wings and turn into Goobmas if they get stepped on. The Goomba family is made up of expert bunters, although no one really makes a big deal about it. Bunting, after all, isn't all that glamorous.
Good Chemistry: Goomba, Koopa Paratroopa, Monty Mole
A familiar face of the Mario series, this member of the Koopa clan can pull his feet inside his shell to protect himself. Long ago, he didn't even walk upright, but now he's even playing baseball! Though he can do just about everything, he's slow because...well, you know.
Good Chemistry: Bowser, Koopa Paratroopa, Dry Bones
Another longtime underling of Bowser. Paratroopa flies through the sky and delivers body shecks to Mario and others, but he's vulnerable to a good stomping, which takes away his wings and turns him into a garden-variety Koopa. His wings allow him to leap up and make great catches.
A bony underling of Bowser. Some mysterious power binds the skeletal bodies of Dry Bones together, but they shatter to pieces when they take damage. Of course, over time, they go right back to the way they were without ill effect. Dry Bones throws cursed balls when he pitches.
One of Mario's oldest and most annoying foes. The Hammer Bro is said to be the mightiest warrior of Bowser's army. Besides the hammer-throwing variety, there are also Boomerang and Fire Bros as well. Teames fear his aggressive play and lethal bat.