Along the way in the "Learn To D.R.I.V.E." mode, you will unlock new characters to race as. These characters are available for use in "Quick Play" and "Group Play" modes.

Character	How to unlock
Mermaid Man and Barnacle Boy	Unlocked after passing Lesson 1 of Class "E".
Mr. Krabs	Unlocked after passing Class "I".
Mrs. Puff	Unlocked during the Finals Exams.
Plankton	Unlocked during Class "V".
Seymour Scales	Unlocked for completing the story.