Unlockable character

An unlockable character is a character who is not available at the start and has to be unlocked through gameplay progression. This mechanic was first introduced in *Nickelodeon Kart Racers 2: Grand Prix*.

## List of Unlockable Characters

### Kart Racers 2

* **CatDog:** Complete the Hairball Cup on any difficulty.
* **Gerald:** Complete the Football Cup on any difficulty.
* **Angelica:** Complete the Diapee Cup on any difficulty.
* **Heffer:** Complete the Conglom-O Cup on any difficulty.
* **Squidward:** Complete the Neptune Cup on any difficulty.
* **Clyde:** Complete the ARGGH! Cup on any difficulty.
* **JoJo Siwa:** Complete the D.R.E.A.M Cup on any difficulty.
* **Ren:** Complete the Super Slime Cup on any difficulty.
* **Danny:** Defeat him in a boss match at the end of the first panel of challenges.
* **Stimpy:** Defeat him in a boss match at the end of the second panel of challenges.
* **Korra:** Defeat her in a boss match at the end of the third panel of challenges.
* **GIR:** Defeat him in a boss match at the end of the fourth panel of challenges.
* **Reptar:** Defeat him in a boss match at the end of the fifth panel of challenges.
* **Shedder:** Defeat him in a boss match at the end of the sixth panel of challenges.

### Kart Racers 3

* **Squidward:** Defeat him in a boss match at the end of the first panel of challenges.
* **April:** Defeat her in a boss match at the end of the second panel of challenges.
* **Oblina:** Defeat her in a boss match at the end of the third panel of challenges.
* **Jenny:** Defeat her in a boss match at the end of the fourth panel of challenges.
* **Gerald:** Defeat him in a boss match at the end of the fifth panel of challenges.
* **Powdered Toast Man:** Defeat him in a boss match at the end of the sixth panel of challenges.
* **Patrick:** Buy him in the Garage for 150 Slime Tokens.
* **Sandy:** Buy her in the Garage for 150 Slime Tokens.
* **Kamper SpongeBob:** Buy him in the Garage for 160 Slime Tokens.
* **Kamper Patrick:** Buy him in the Garage for 160 Slime Tokens.
* **Squidina:** Buy her in the Garage for 150 Slime Tokens.
* **JoJo Siwa:** Buy her in the Garage for 150 Slime Tokens.
* **Michelangelo:** Buy him in the Garage for 170 Slime Tokens.
* **Clyde:** Buy him in the Garage for 150 Slime Tokens.
* **Lucy:** Buy her in the Garage for 160 Slime Tokens.
* **Toph:** Buy her in the Garage for 170 Slime Tokens.
* **Korra:** Buy her in the Garage for 170 Slime Tokens.
* **Reptar:** Buy him in the Garage for 160 Slime Tokens.
* **GIR:** Buy him in the Garage for 170 Slime Tokens.
* **Stimpy:** Buy him in the Garage for 160 Slime Tokens.
* **CatDog:** Buy them in the Garage for 160 Slime Tokens.
* **Danny:** Buy him in the Garage for 150 Slime Tokens.
* **Odie:** Buy him in the Garage for 170 Slime Tokens.
* **Purple Reptar:** Buy him in the Garage for 200 Slime Tokens.
* **Cindy:** Win 15 Slime Scrambles on any difficulty.
* **Donatello:** Defeat all the Time Trial Ghosts.
* **Raphael:** Win 70 Arena matches.
* **Helga:** Win 18 online matches.

## Trivia

* Ren is the only character to start out as an unlockable character and then become a default character in a future game.
* SpongeBob, Leonardo, Eastman & Laird Raphael, Lincoln, Tommy, Chuckie, Susie, Aang, Zuko, Arnold, Zim, Rocko, Jimmy, and Garfield are currently the only characters to never be unlockable.
	+ SpongeBob, Leonardo, and Arnold are the only characters with this distinction to appear in all three games.
* Danny, Stimpy, and Reptar (in KR2) are the only characters unlocked through the Challenges where you can use any character you want to try to unlock them. For all the others you have to use a specific character.
* Besides the Super Slime Cup, all the cups in KR2 feature a track from the series of the character you are about to unlock as the last track and the unlockable character will always appear as an opponent if you are not playing as them yourself after you unlock them. Also, they are all named after something from their home series except for the Super Slime Cup.