In a 'Beast Boy Leaves the Titans' fanfic, perhaps he has a falling - out with one of the Titans, like Cyborg over a difference in their approaches to fighting crime. This rift could grow so large that Beast Boy feels he has no choice but to leave. He then embarks on a journey to find a new group of heroes or anti - heroes who share his more unorthodox views on justice.
One possibility could be that Beast Boy feels out of place. Maybe he's constantly overshadowed by the other Titans and decides he can be more effective on his own. He might leave to explore his identity outside of the team and find his true purpose in a world where he doesn't have to conform to the Titans' way of doing things.
It could be a new villain who specifically targets Beast Boy because of his connection to the Titans. This villain might want to use Beast Boy as a way to get to the Titans or to prove his own power. For example, a powerful sorcerer who wants to steal Beast Boy's shape - shifting abilities for his own dark magic.
Well, in this fanfic, Beast Boy might show off his unique shape - shifting abilities to the Titans in a really cool way. Maybe he uses his powers to save the day in a new and unexpected scenario.
It could be that a mysterious Christmas spirit visits the Titans. This spirit has a task for Beast Boy and Raven. They have to find three lost Christmas ornaments that are the keys to bringing peace and joy to the city. Along the way, they face various challenges, like a blizzard created by an ice - powered foe. But through their teamwork and growing connection, they manage to find the ornaments and save Christmas.
A really cool plot for a Beast Boy Titans North fanfic would be if there was a mystery in Titans North related to some ancient animal - themed artifacts. Beast Boy, with his connection to animals, gets drawn into the mystery. He could discover that these artifacts have the power to either enhance or disrupt his powers. Along the way, he also has to deal with his own insecurities about being different from the other Titans in North, as his powers are more nature - based compared to some of their high - tech or super - strength powers.
One possible fanfic could be about Beast Boy and Raven getting stuck together while decorating the Titans' tower for Christmas. Maybe Beast Boy accidentally turns into a reindeer and Raven has to use her powers to control him. It could be a really funny and heartwarming story of their friendship during the Christmas season.
A possible ally could be a character with healing powers. Since Beast Boy often gets into dangerous situations while using his shapeshifting, someone who can heal his injuries would be very useful. For example, a healer who can also communicate with animals on a spiritual level, similar to Beast Boy's connection to them.
Well, perhaps it could be about Beast Boy losing control over his powers and fully becoming the beast all the time. Maybe there's a curse or some dark magic at play that forces him into this state.
One possible plot could be that Beast Boy gets angry because his friends don't trust his new animal form discovery. He feels isolated and lashes out at them, causing chaos in the Titans' tower. His anger might lead to him running away and getting into trouble in the city, where he has to face his emotions and learn to control his powers better while his friends search for him.
One possible plot could be that Beast Boy fails to save someone he cares about deeply. This guilt and the sense of loss could be the source of his sadness. He would then struggle to come to terms with his failure and find a way to move forward.
A possible plot could be that there's some sort of interdimensional rift that brings Beast Boy and Storm together. They have to work together to close the rift while also dealing with their different powers and personalities. Beast Boy's ability to transform into animals and Storm's control over the weather could create some really cool action scenes as they face various threats.