Secret characters in Lego Batman 1 (black mask, huntress, spoiler, and azrael) : r/LegoBatman

I Turned LEGO Batman Into A Horror Game!

LEGO Batman: The Videogame, Brickipedia

Batgirl - Brickipedia, the LEGO Wiki

The Filler Characters In Lego Batman The Videogame Could Have Been Replaced By These Characters. : r/legogaming

So I'm playing Lego Batman 1 and I find out that if you get 100% on the game, go to the character creator room in Arkham asylum and you can create 3

LEGO Batman: The Videogame, Batman Wiki

Black Mask, Brickipedia

Barbara Gordon - Wikipedia

Killer Moth - Brickipedia, the LEGO Wiki

Mad Hatter Brickipedia+BreezeWiki

TGDB - Browse - Game - LEGO Batman: The Videogame

List of Batman family enemies - Wikipedia

Holy Unlockable Azrael & Huntress! - LEGO Batman: The Videogame

Spoiler, LEGO Batman Wiki