Personal Info:
Real Name: Alexis Kaye
Also Known As: No known Alias
Place Of Birth: Gotham City
First Appearance: Batman Vol.3 #89 (2020) Modern Age Villain
Known Associates: Joker
Group Affiliation: None
Base Of Operations: Gotham City
Grudges: Batman
Creators: James Tynion IV and Jorge Jiménez
Gallery: Click
Puncline is a trained acrobat, has some skill in hand-to-hand combat and is skilled in toxicology.
Joker Venom: Punchline often employs a poison developed by the Joker that is almost always fatal when administered. The victim is left with a Joker like smile on their face.
Alexis was a student of Snyder College. She was infatuated with The Joker and eventually came into contact with him through the internet. He taught her how to create Joker Venom, which she used to experiment on the homeless community. Following a Joker attack in Gotham City, Snyder College hosted a superhero spirit day, with Alexis dressing with Joker logos. The dean went to talk to her, but she exposed him to Joker Venom, completing her transformation into Punchline.
Punchline at DC Database
Punchline at Batman Wiki
Punchline at Comic Vine