The Black Lantern Batman story is often part of the larger DC Comics' Blackest Night storyline. In it, Batman is resurrected as a Black Lantern. He has some of his usual abilities but is now under the control of the Black Lantern Corps. His body is a shell, and he attacks the living, including his former allies. It's a really dark and twisted take on the Batman character, showing how even the Dark Knight can be used for malevolent purposes in the wrong hands, or rather, in the hands of the Black Lantern power.
The main character is obviously Batman, but in his Black Lantern form. Other important characters include the heroes who have to face him, like Green Lantern. Green Lantern often has to deal with the Black Lanterns in general, and in this story, he's one of the key figures in trying to figure out what to do with Black Lantern Batman. Also, characters like Alfred, who has a connection to Batman, are relevant as they react to this strange and terrifying version of Batman.
The Black Lantern origin story has deep roots in the DC Comics mythology. It begins with Nekron, a being of death. Nekron creates the Black Lantern power rings. These rings have the ability to seek out the dead across the universe. The rings are attracted to those with strong emotions, particularly negative ones like fear and anger. Once a dead body is chosen by a black ring, it is reanimated into a Black Lantern. The Black Lanterns are not like normal undead; they have a unique power source related to death energy. They can also use the emotional energy of fear from living beings to fuel their powers. This makes them a very dangerous and terrifying force in the DC Comics universe, often causing chaos and destruction as they carry out Nekron's dark plans.
In a fanfic where Batman becomes a lantern, his character would likely undergo some changes. The lantern power might give him new insights into the emotional spectrum. For example, if he were a Green Lantern, his willpower could be enhanced even more. He could also face new challenges as he has to deal with the Lantern Corps' politics and enemies. It would be a great opportunity to explore how Batman's dark and brooding nature would interact with the more cosmic and colorful Lantern world.
Perhaps in the fanfiction, the Red Lanterns see Batman as a potential asset. They manipulate events in Gotham to push Batman to his breaking point, causing him to embrace the Red Lantern power. Batman then has to figure out how to use this new power without losing his identity. He might try to reform the Red Lanterns from within, using his own code of ethics to influence them.
One idea could be Batman being forced to team up with a Yellow Lantern to stop a common enemy. Maybe a powerful villain from the fringes of the universe is threatening Gotham and the Yellow Lantern has some knowledge or power that Batman needs.
If Batman becomes a Lantern in fanfiction, he would gain the power of the Lantern ring. This could enhance his combat abilities even further. He might use the ring's energy constructs in his crime - fighting, creating things like shields or grappling hooks. His detective skills combined with the Lantern powers would make him an even more formidable force in Gotham.
I really like the fanfic 'Lantern's Light in Gotham's Shadows'. In this story, the Green Lantern visits Gotham and ends up collaborating with Batman to take down a powerful and mysterious criminal organization. The story does a good job of showing how their different methods of crime - fighting can work together.
The 'Christmas Lantern Story' could be about many things. It might be a story where a Christmas lantern plays a central role. For example, it could be about a family who uses a special Christmas lantern to guide Santa to their house. Or it could be about a child who discovers a magical Christmas lantern that takes them on a journey through a winter wonderland filled with elves, reindeer, and presents.
One interesting story could be about Batman being tempted by the power of the Yellow Lantern ring. Maybe he struggles with the fear - based power it offers while still trying to uphold his own code in Gotham. For example, he might face off against his rogues gallery in a new way, using the yellow energy but also fighting not to be fully consumed by it.
The fact that they come from different parts of the DC universe is a big draw. Batman is a street - level hero in Gotham, and the Green Lantern is more of a cosmic hero. Fanfiction can bridge that gap and create stories that range from gritty, urban crime - fighting to epic space battles. This versatility is what makes 'Batman Green Lantern' fanfiction so appealing to many fans.