Joker has a multiple choice past. Sometimes he makes things up. Sometimes it is forgotten. But he definitely used the Harley Quinn Once Upon a time I was sweet and innocent the shit happened shirt abusive parental line to manipulate Harley. He couldn’t even keep the story clear. He told Harley that the only good memory of his father was the circus. Batman said he used an ice show with a probation officer. “He has a million em Harley”
Honestly, it depends on what Deadpool and Harley Quinn.
Harley Quinn Once Upon a time I was sweet and innocent the shit happened tank top, long sleeve
If it’s a Harley Quinn that’s still dedicated to the Joker, it would end in a fight to the Harley Quinn Once Upon a time I was sweet and innocent the shit happened shirt death that Deadpool would win. If it’s a Harley Quinn who’s not a joker, they would probably fight for a while, making jokes, etc. and they would end up sleeping together until Deadpool returns to the Marvel universe. For Catwoman definitely an orange ring. She is a thief, she always steals and wants what is not hers. Harley Quinn would be purple.