A possible plot could be that the Suicide Squad is sent to a small town where Bella lives. Bella is the only one who knows the secrets of the town which are somehow related to a global threat. She teams up with the Squad, and during their time together, she teaches them about the value of life and friendship in a way that changes some of the more cynical members. As they face challenges together, they start to see Bella as an important part of their mission and their lives.
Well, perhaps Bella is from a different dimension and her knowledge of that dimension's technology or magic can be used by the Suicide Squad. She could be a key to stopping an inter - dimensional threat that the Squad is facing. Also, Bella might have a connection to one of the Squad members from her past, which creates an interesting dynamic within the group.
One idea could be exploring the backstories of the lesser - known members in more detail. For example, showing how they got their powers or what led them to their criminal lives.
An OC could be a brilliant but morally ambiguous scientist. In the Suicide Squad fanfiction, this OC could be brought in to develop new weapons or countermeasures against the various threats they face. Their methods might be unethical, but they get results, leading to internal conflict within the Squad about whether to keep them around.
One plot idea could be that the Suicide Squad is sent back in time to prevent a major event that led to the creation of a super - villain they later had to fight. This would give them a chance to change the future for the better. Another idea is that they travel to the future and see the consequences of their actions in the present, and have to find a way to fix things. Or perhaps a member of the Squad accidentally activates a time - travel device and they all end up in different time periods, and have to find each other and get back to their own time.
Well, in a Suicide Squad isekai fanfiction, they could end up in a world of steampunk technology. Deadshot would find new and strange weapons to use. Or they might be isekai'd into a world ruled by a tyrant, and they have to decide whether to side with the rebels or use the situation for their own gain. Also, an idea could be that they are sent to a world where their powers are nullified, and they have to rely on their wits and non - superhuman skills.
An interesting OC for a Suicide Squad fanfiction could be someone with the power of telekinesis but with a major flaw. Maybe their power is linked to their emotions, so when they get angry, their telekinetic abilities go out of control. This would not only create challenges for the character but also for the rest of the Squad. They would have to find ways to keep the OC in check during missions while also using their powers effectively.
Another plot could involve a crossover with the Watchmen universe. The Suicide Squad enters the morally grey world of the Watchmen. They might be sent to retrieve something or someone from that universe. This would lead to some intense confrontations as the Squad's chaotic nature clashes with the Watchmen's complex moral codes.
One idea could be Harley Quinn trying to break free from the Joker's control completely within the Suicide Squad setting. Maybe she starts to form real friendships with the other Squad members, like Deadshot, and they help her see that she doesn't need the Joker's madness in her life.
One idea could be a fanfiction where Harley Quinn tries to break free from the Joker's control completely. In this story, she starts to realize that his love is more about possession. She could meet new allies who help her see her self - worth outside of being the Joker's sidekick.
One idea could be exploring their relationship before Harley fully embraced her criminal side. Maybe show how the Joker manipulated her in the early days. Another could be a story where they have to face a common enemy in the Suicide Squad universe that forces them to re - evaluate their relationship. Or perhaps a story where Harley starts to break free from the Joker's control and how he reacts to that.
A possible plot could be that Voldemort teams up with some powerful villains from the non - wizarding world, and the Ministry of Magic, realizing they need some unorthodox help, recruits the Suicide Squad. The Squad then has to navigate the wizarding world, learn magic (or at least how to defend against it), and fight alongside Harry Potter and his friends against this new super - villain alliance.