The LEGO Captain Boomerang Black Outfit minifigure is a part of the LEGO Super Heroes theme, specifically from the Batman: Killer Croc Sewer Smash set (76055). This black-clad version of the character is a collectible piece that allows fans to recreate scenes from the Batman II subtheme. Made in Denmark, this LEGO minifigure is a must-have for Batman and LEGO enthusiasts looking to expand their collection with a unique and detailed character.