In The Joker's most common origin, he was once a former chemical engineer turned failed comedian, known as the Red Hood, trying to escape Batman. Red Hood fell into a vat of toxins which turned his hair green, bleached his skin white, stained his lips red, and stretched them out into an everlasting smile, giving him the appearance of a crazed clown. Driven insane by this reflection, he renamed himself "The Joker".
- This minifigure could be confused with Red Hood, the second Robin that later turned into a super villain and even later a violent vigilante:
- Firstly, he appears in the same scenes as The Joker.
- Secondly, while his body is based on the The Joker's outfit from The Killing Joke and the Red Hood's first appearance in Detective Comics #168, the minifig's head under the dome (not seen in the movie) is Jason Todd's mask.