There are a total of ___ unlockable characters in Cartoon All-Star Rumble. The player must complete multiple objective in order to unlock these characters for battle. When a character is unlocked, they must be fought and beaten to unlock for playability.

Unlockable Characters
Agent P
Sir Robert Norramby
Daria Morgendorffer
Recess Gang
SSB Recess
Pam Mizore Magica De Spell
SSB DuckTales
SSB Popeye
Sandy Cheeks Mr. Krabs Plankton Melody