Cheat Code for Space Criminal in LEGO Battles? Doesn't Exist

There is no cheat code to unlock a "Space Criminal" character in LEGO Battles (DS). The game has very few cheat codes (mostly for studs/unlocking all levels), and none modify the character roster in Free Play or Story Mode.

You might be confusing it with:

• LEGO Star Wars / Batman / Indiana Jones / Harry Potter – those have "Character Customizer" or cheat codes for specific characters.
• LEGO Battles: Ninjago – different game, different unlocks.

In LEGO Battles, units are unlocked by completing campaign missions and challenges for each faction (Kingdom, Pirates, Space, Aliens, etc.). The "Space Criminal" isn't a distinct unlockable unit in the base game.

If you recall the platform (DS only) or a specific faction/level, I can check if a similarly named unit exists under a different name.