Zach Galifianakis’s LEGO Joker wants nothing more than for LEGO Batman to acknowledge their shared connection, and the core conflict of The LEGO Batman Movie stems from that idea.
That’s one of the key aspects of the character, and it’s an idea that The LEGO Batman Movie leans directly into.
If there’s one constant in this endlessly malleable character, it’s the fact that he lives for his relationship with The Caped Crusader.
It’s a well-worn concept from Batman’s lore, and it’s an idea that longtime Batman fans will instantly recognize from previous depictions of the character.