Some common themes could be adventure. Since Dillon is a Power Ranger, there are likely to be battles and quests to save the world. Another theme might be friendship. The relationship between Dillon and the reader could start as a friendship and develop into something more. Also, self - discovery. Dillon has his own backstory and the reader character might also be on a journey of finding out who they are within the context of this Power Rangers universe.
First, start with an interesting meeting between Dillon and the reader. Maybe the reader stumbles upon Dillon during a battle or in a secret Ranger base. Then, create conflict. It could be an external threat like a new enemy that the Rangers have to face and the reader gets caught in the middle. Build the relationship between Dillon and the reader gradually. Show their conversations, how they start to trust each other.
Maybe the OC has a special power that she's not fully in control of yet. Dillon takes it upon himself to help her train. This could lead to some really cool training scenes in different locations like the abandoned city outskirts. As they train, their relationship deepens, and they start to rely on each other more and more, not just in combat but also in understanding their own identities within the Ranger world.
One popular story could be about Dillon's internal struggle with his past traumas while still trying to be a strong Ranger. Maybe he has flashbacks during battles that he has to overcome to protect his team.
First, show their initial interactions being a bit rocky. Dillon is a tough character, so he might not trust the OC right away. Then, gradually have them find common ground. For instance, they both have a strong sense of justice. Next, give them shared experiences like surviving a difficult battle together. This will start to build a connection.
Build a solid plot. It could be centered around a new threat in the RPM world that Dillon and the OC must face together. Make sure there are obstacles and conflicts along the way, like trust issues between them at first. And don't forget to include some emotional moments to engage the readers.
One idea could be Dillon forming an unexpected bond with a new OC (original character). Maybe the OC is from a different part of the post - apocalyptic world and has unique skills or knowledge. For example, the OC could be a tech - genius who helps Dillon upgrade his weapons in a new way.
For Dillon, you can focus on his backstory. Maybe expand on his time before becoming a Power Ranger, his relationships, and how that has shaped him. With the OC, give them distinct personality traits. For example, if the OC is brave but also has a bit of a clumsy side. You can also show how they interact with the existing Power Rangers. For Dillon and the OC's relationship, start with small moments of connection, like sharing a look during a tough battle.
Another plot could involve the OC being from a different dimension. Dillon discovers that the OC's dimension is somehow linked to the threat they are currently facing as Power Rangers. They have to work together to close the rift between the dimensions while also dealing with their growing feelings for each other. Maybe there are some cultural differences between them that add both humor and tension to the story.
Writers can show Dillon's growth through his response to pain. For instance, if he gets injured, instead of just being sidelined, he could use the time to train his mind, developing new strategies for future battles.