Nickelodeon Extreme Tennis

Confirmed Playable Characters

 * SpongeBob SquarePants (SpongeBob SquarePants [1999])
 * Patrick Star (SpongeBob SquarePants [1999])
 * Sandy Cheeks (SpongeBob SquarePants [1999])
 * Raphael (Teenage Mutant Ninja Turtles [2012])
 * Michelangelo (Teenage Mutant Ninja Turtles [2012])
 * April O'Neil (Teenage Mutant Ninja Turtles [2012])
 * Lincoln Loud (The Loud House [2016])
 * Clyde McBride (The Loud House [2016])
 * Tommy Pickles (Rugrats [1991])
 * Angelica Pickles (Rugrats [1991])
 * Reptar (Rugrats [1991])
 * Arnold Shortman (Hey, Arnold! [1996])
 * Helga G. Pataki (Hey, Arnold! [1996])
 * CatDog (CatDog [1998])
 * Ren & Stimpy (The Ren & Stimpy Show [1991])
 * Powdered Toastman (The Ren & Stimpy Show [1991])
 * Danny Phantom (Danny Phantom [2004])
 * Zim (Inavder Zim [2001])
 * Ickis (AAAHH!!! Real Monsters [1994])
 * Eliza Thornberry (The Wild Thornberrys [1998])
 * Rocko Rama (Rocko's Modern Life [1993])
 * Aang (Avatar: The Last Airbender [2005])
 * Toph Beifong (Avatar: The Last Airbender [2005])
 * Korra (Avatar: The Legend Of Korra [2012])

Online Tournament Characters

 * Shredder (Teenage Mutant Ninja Turtles [2012])
 * Leonardo (Teenage Mutant Ninja Turtles [2012])
 * Donatello (Teenage Mutant Ninja Turtles [2012])
 * Garfield (Garfield & Friends [1988])
 * Squidward Tentacles (SpongeBob SquarePants [1999])
 * Eugene H. Krabs (SpongeBob SquarePants [1999])
 * Sheldon J. Plankton (SpongeBob SquarePants [1999])
 * Timmy Turner (The Fairly Odd Parents [2001])
 * Chloe Carmichael (The Fairly Odd Parents [2001])
 * Dr. Crocker (The Fairly Odd Parents [2001])
 * Jimmy Neutron (The Adventures Of Jimmy Neutron: Boy Genius [2002])
 * Sheen Estevez (The Adventures Of Jimmy Neutron: Boy Genius [2002])
 * Carl Wheezer (The Adventures Of Jimmy Neutron: Boy Genius [2002])
 * Vlad Plasmius (Danny Phantom [2004])
 * Dudley Puppy (T.U.F.F. Puppy [2010])
 * Kitty Katswell (T.U.F.F. Puppy [2010])
 * Fanboy & Chum-Chum (Fanboy & Chum-Chum [2009])
 * Kyle (Fanboy & Chum-Chum [2009])
 * Skipper (The Penguins Of Madagascar [2008])
 * King Julien (The Penguins Of Madagascar [2008])
 * Bessie (The Mighty B! [2008])
 * Otis (Back At The Barnyard [2007])
 * Tak (Tak & The Power Of Juju [2007])
 * Sanjay & Craig (Sanjay & Craig [2013])
 * SwaySway & Buhdeuce (The Breadwinners [2014])
 * Oblina (AAAHH!!! Real Monsters [1994])
 * Krumm (AAAHH!!! Real Monsters [1994])
 * Gerald Johansson (Hey, Arnold! [1996])
 * Chuckie Finster (Rugrats [1991])
 * Darwin Thornberry (The Wild Thornberrys [1998])
 * Donnie Thornberry (The Wild Thornberrys [1998])
 * Nigel Thornberry (The Wild Thornberrys [1998])
 * Ginger (As Told By Ginger [2000])
 * Otto Rocket (Rocket Power [1999])
 * Ruby (ChalkZone [2002])
 * Gerald McCloy (Gerald McBoing-Boing [2005])
 * Janine (Gerald McBoing-Boing [2005])
 * Jacob (Gerald McBoing-Boing [2005])
 * Hiro Mightypaw (Monkey Quest [2011])
 * Doug Funnie (Doug [1991])