His first appearance was in "Batman #1".
The Joker's sexual orientation is not written into his character.
G. D. Joker has written: 'Emil, auch nur ein Mensch'
He was the first actor to act as the joker in the dark knight, if that is what you are referring to.
In the original edition of the Batman comic, the very first book ever released contained the Joker. The Joker was the first villain that Batman ever defeated.
Klaus Kilian has written: 'Jolly Joker'
Art Cohn has written: 'The joker is wild'
Claude Raymond has written: 'Joker' 'Dispositions'
You mean "In what issue does Batman meet the Joker, for the first time". In Batman #1.
Who is Batman? that is what the card says.
The DC comics character "The Joker" made his first appearance in Batman #1 Spring 1940 .
No, they do not disappear. The collectables are not missable, you can get them all after completing the game.
Ange-Mathieu Mezzadri has written: 'Le joker juif'