This page contains The Grim Adventures Of Billy And Mandy Unlockables for GameBoy Advance called "Unlock Mandy in Story Mode" and has been posted or updated on Nov 13, 2006 by Monique.
- Developer: Full Fat
- Publisher: Midway
- Genre: Action Beat-'Em-Up
- Release: Oct 31, 2006
- ESRB: Everyone 10+
Unlock Mandy in Story Mode
Find 5 mojo balls and beat Billy's Story.
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