The Suicide Squad Isekai series, an anime adaptation of a DC Comics property, released a trailer confirming a July 2024 release. The trailer focuses on Harley Quinn and the Squad being sent to another world, introducing the Japanese villain Katana, hinting at her role as an antagonist. Katana, a character from DC Comics, is a skilled swordswoman with a tragic backstory involving a magical sword that traps souls. The anime adaptation will follow classic isekai tropes of entering a fantasy world and engaging in conflict.

Written by Tappei Nagatsuki, author of Re:Zero, the series is anime-original. Katana's debut in the series shows her fighting against Harley Quinn, indicating a potential antagonist role. The number of episodes for the series is currently unknown.