Unlike many games that offer cheat codes for instant unlocks, the LEGO Batman series ties all progression to actual gameplay. There are no traditional cheat codes to instantly access all characters, vehicles, or data files—instead, the games reward thorough exploration and completion.
If you're missing specific data files or characters, online walkthroughs for the specific title (LEGO Batman: The Videogame, LEGO Batman 2: DC Super Heroes, LEGO Batman 3: Beyond Gotham) can pinpoint exact locations. Each game has its own level structure and unlock requirements, so title-specific guides are far more useful than general advice.