Mario and his merry cast has came back from Mario Tennis with exception of a few unavailable, namely Donkey Kong Jr and Baby Mario. New to this however is Diddy Kong, Bowser Jr, Wiggler and Petey Pirhana. To start off is the few important things catered to people who wants their character a different way. There's no Demo Mode but try out all these characters are master them to their best!
Left handed
You can switch it by pressing 
. You might think it's not important. Being left handed means the angles of your shots could almost be mirrored. Like if you hit left with the right hand, it might not be powerful compare to being left handed, hit the same way. Also it might help to tell yourself apart from the computer or a human player beside you.
Star Power
Unfortunately, it's not unlocked for every character. You need to finish the first three tournaments to give your character an extra power that it needs for a further three tounaments at the end. If you succeed in unlocking star power for your characters that you use so far, you can press 
to enhance it's prowess. So don't be afraid to add power to help you get an advantage in the courts.
Type of attributes
It wouldn't be fair that all characters play the same way. However, given their character's nature in size, shape and strength, there will be ups and downs for every character in their level of strength.
All Around
Both Mario and Luigi are well balanced in all areas but is not likely to exceed in all areas. It's perfect for beginners who wants to go straight into the game.
- Mario's defensive shot is Mario Tornado. Mario's offensive shot is the Super Hammer.
- Luigi's defensive shot is Poltergiest Return. Luigi's offensive shot is the Squeaky Hammer.
Technique
Peach, Daisy, Shy Guy and Paratrooper excels well in hitting the ball to the furthest point of the court with deadly accuracy. The downside is they're not as defensive as Waluigi. Intermediate players will be well suited with those types of attributes.
- Peach's defensive shot is Sweet Kiss Return. Peach's offensive shot is the Super Peach Spin.
- Daisy's defensive shot is Flowerbed Return. Daisy's offensive shot is Wonder Flower.
- Shy Guy's defensive shot is Spear Dance Return. Shy Guy's offensive shot is Lightning Spear.
- Paratrooper's defensive shot is Sky Dive. Paratrooper's offensive shot is Energy Ball.
Power
Bowser, Donkey Kong, Wario and Petey Pirhana are such dynamos in strength but is totally flawed in speed. Advanced players would really have to move these heavy hitters to master their powerful strength.
- Bowser's defensive shot is Spinning Shell Dash. Bowser's offensive shot is Fire Breath.
- Donkey Kong's defensive shot is Boomerang Banana Return. Donkey Kong's offensive shot is Barrel Cannon Blast.
- Wario's defensive shot is Ultra-Hand Return. Wario's offensive shot is Thunder Cast Shot.
- Petey Pirhana's defensive shot is Pirhana Swingback. Petey Pirhana's offensive shot is Sludge Racket.
Speed
Yoshi, Diddy Kong and Koopa Troopa is the opposite of power. They're really speedy character's but they suffer when it comes to the strength of their shots. Advanced player will need practice to be able to move around the court with ease.
- Yoshi's defensive shot is Rolling Egg Return. Yoshi's offensive shot is Rainbow Flutter.
- Diddy Kong's defensive shot is Barrel Jet. Diddy Kong's offensive shot is Acrobatic Banana.
- Koopa Troopa's defensive shot is Water Shell Dash. Hoopa Troopa's offensive shot is Water Bomb.
Defensive
Waluigi and Wiggler has a great reach of hitting balls within the lengths of the court but can't be quick enough if the ball is out of reach. Intermediate players will have a good time with these two.
- Waluigi's defensive shot is Swimming Return. Waluigi's offensive shot is Whirluigi.
- Wiggler's defensive shot is Butterfly Return. Wiggler's offensive shot is Anger Management.
Tricky
Boo, Bowser Jr and Fly Guy excels in a bizarre version of an all around. Even though they don't excel well in all areas but once they hit the ball, it moves in a curvy left and right trajectory. Advance players should have a good practice with them before they really play.
- Boo's defensive shot is Boo Brigade Return. Boo's offensive shot is Boo Blast.
- Bowser Jr's defensive shot is Rolling Brush Return. Bowser Jr's offensive shot is Magic Paint.