In this type of fanfiction, there could be another villain manipulating Red Hood into kidnapping Tim Drake. For example, a new villain in Gotham who wants to create chaos between the Bat - family members. So this mystery villain would be the main antagonist, while Red Hood is just a tool in their plan.
It might be that Red Hood's own inner demons are the main antagonist. His unresolved issues from his past lead him to kidnap Tim Drake. These inner struggles are what drive his actions and as the story progresses, Tim Drake might help Red Hood face and overcome these internal antagonists.
Well, it could be Red Hood himself. Since he's the one doing the kidnapping, he could be seen as the antagonist at the start. But as the story unfolds, there might be a bigger threat lurking in the shadows that makes him and Tim Drake team up.
In a 'Red Hood kidnaps Tim Drake' fanfiction, it might be about Red Hood trying to prove a point to Batman. He kidnaps Tim as a way to show Batman his methods are wrong. Tim, being the smart detective he is, tries to reason with Red Hood during his captivity and in the end, changes Red Hood's perspective a bit.
It could be someone manipulating Red Hood. For instance, a powerful crime lord who has some dirt on Red Hood and forces him to kidnap Nightwing. So, in a sense, this crime lord would be the real villain.
Tim Drake might discover Red Hood's identity by piecing together information from various encounters and observing patterns in their behavior and actions.
Well, one possibility is that Tim Drake might be extremely grateful and form a new alliance with Red Hood. This could lead to them working together to take on a bigger threat in the Young Justice universe. Maybe they'd start sharing intel and resources that they each have access to, which could give them an edge against their enemies.
In such a fanfiction, the plot might be centered around Red Hood having some sort of vendetta against Nightwing. Maybe he believes Nightwing has wronged him in the past, and the kidnapping could be a way to get revenge or force Nightwing to face something. For example, Red Hood could be trying to expose a secret that Nightwing has been hiding.
Maybe the main antagonist is an ancient evil that has awakened. It has the power to manipulate Artemis's mind, making her kidnap Percy against her will. This evil entity wants to use Percy as a sacrifice to gain more power. So, while Artemis is the one who physically kidnaps Percy, the real force behind it, the ancient evil, is the true antagonist.
A powerful and corrupt organization might be the main antagonist. They blackmail Wade into kidnapping Peter. The organization wants to study Peter or use him as a bargaining chip. Wade is caught in a difficult situation where he has to protect Peter from this organization while also dealing with the fact that he has kidnapped him.
The main antagonist could be the head of the CIA operation that orders Link's kidnapping. This person might be power - hungry and believe that Link can be used to gain more control or knowledge.
It could be that the real antagonist is the situation or the world they live in. For example, if they are in a post - apocalyptic world where resources are scarce, Paul might kidnap Bella to ensure his own survival or the survival of his group. In this case, the harsh environment is the main driving force behind the antagonistic act.
The wolf could still be the main antagonist. But instead of just being a regular wolf, it could be a werewolf with dark magic powers. It wants to take over the forest and Red Riding Hood, with her new superhero status, has to stop it.