A cool plot could be an OC Green Lantern who has the ability to create constructs that can mimic different elements from their home planet. So, if their planet has a lot of crystal formations, they can create crystal - like constructs that are stronger and sharper than the normal green constructs. This OC could be on a quest to find a lost artifact from their planet that has the power to enhance the Green Lantern rings even further.
One idea could be an OC Green Lantern from a different planet arriving on Earth and having to adjust to the Young Justice team's way of doing things. They might have unique powers related to their home planet's culture that add new elements to the team's battles.
In 'green lantern rwby fanfiction', a plot could involve a character from RWBY being chosen as a Green Lantern. For example, Weiss. Her strict upbringing and sense of justice could make her an interesting Green Lantern. She would have to learn to control the power of the ring while still dealing with the problems in her own world, like the Grimm. And she might use the ring's power in unique ways, combining her glyphs with the constructs created by the ring.
One idea could be that the Green Lantern Corps discovers a threat that has its origin in the Marvel Universe, like a powerful artifact from Asgard that is being misused. The Green Lanterns then have to team up with the Avengers to retrieve and safeguard it. Another plot could involve a character like Hal Jordan being accidentally transported to the Marvel Universe and having to work with Spider - Man to find his way back home while also facing a common enemy.
Perhaps a story where a Green Lantern ring chooses an unexpected candidate in the Young Justice universe. This person might not have the typical 'hero' qualities at first. They then have to prove themselves not only to the Green Lantern Corps but also to the Young Justice team while dealing with the newfound power and responsibility.
One plot idea could be the sidekick having to step up when the Green Lantern is incapacitated. They might have to face a new and powerful villain alone, using their own wits and the limited Green Lantern powers they've learned. For example, they could use the power ring to create constructs in creative ways to outsmart the enemy.
A plot could revolve around an OC who is a half - Marvel, half - Green Lantern being. Their existence is a threat to the balance of both universes. As they try to figure out their place in the world, they are hunted by both Marvel villains and Green Lantern enemies. They must then find a way to bring peace between the two universes.
One idea could be exploring the backstories of the minor Green Lantern characters. For example, you could write about how a newly recruited Green Lantern copes with the power and the responsibility. Another idea is to create an alternate universe where the Green Lantern Corps has different rules or enemies. Maybe in this universe, they have to team up with their traditional foes to face a greater threat.
A possible plot is that a powerful villain manages to corrupt the Star Sapphire energy source. A Green Lantern discovers this and tries to stop the corruption from spreading. He teams up with a group of Star Sapphires who are also concerned about the situation. Along the way, they learn about the true nature of their powers and how they can work together more effectively to defeat the villain.
One interesting Green Lantern OC fanfic could be about an OC who discovers a new power within the Green Lantern Corps. Maybe they can manipulate time on a small scale, which helps in a crucial battle against a powerful enemy.
Some Si Oc Green Lantern fanfics explore the idea of the Si Oc being a trainee under an established Green Lantern, like Hal Jordan. The story could revolve around the mentor - mentee relationship, with the Si Oc learning valuable lessons about willpower and responsibility. They might also have to overcome personal doubts and fears as they train to become a full - fledged Green Lantern.