What are some interesting plot ideas for dexter's laboratory crossover fanfiction?

One idea could be that the BAU team from Criminal Minds is called in to investigate a series of murders that seem to have a connection to Dexter's 'hobby'. Dexter, being the secret serial killer who targets other killers, might initially be a suspect. Then, as the story unfolds, they could end up working together to take down a bigger network of criminals that neither could handle alone.

The Grim Reaper from 'The Grim Adventures of Billy & Mandy' could be an interesting addition. He could bring some dark humor and a different kind of magic to Dexter's world of science.

One possible plot could be that one of Dexter's female friends or a female character in the Dexter Laboratory world discovers she is pregnant. She might then turn to Dexter for help, thinking his scientific genius could assist in some way, like creating a device to monitor the baby's health in a unique way.

A plot where Dexter's technology malfunctions and sends Ash into an alternate Pokemon universe. In this universe, the roles of Pokemon and trainers are reversed, and Ash has to figure out how to get back while also dealing with this strange new world. This could involve lots of interesting interactions and battles. For example, he might have to convince the Pokemon to help him instead of commanding them like he's used to. It would also be a great opportunity to explore different character relationships and how they adapt to this new situation.

One idea could be that Raven discovers she's pregnant and is initially scared because of her unique powers. Dexter, being the scientific mind, tries to find a way to ensure the baby will be healthy. He starts researching how Raven's powers might affect the pregnancy.

One idea could be a dexter fanfic where Dexter has to team up with his sister Debra to solve a case that has personal implications for them both. Another could be a fanfic set in an alternate universe where Dexter's dark passenger is more of a positive force in his life. Maybe a fanfic where Dexter tries to mentor a young protege who also has a hidden, darker side.

Perhaps in the fanfiction, there could be a love triangle situation. Brick is attracted to Blossom's power and beauty, while Blossom is intrigued by Dexter's intellect. Dexter, on the other hand, starts to develop feelings for Blossom but is also in awe of Brick's physical abilities. This complex relationship web can drive the plot as they navigate their emotions and the challenges that come with their different personalities.

Maybe a crossover with a magical anime. The nanbaka characters could suddenly find themselves in a world full of magic. Some of the nanbaka characters might be really good at using magic in unexpected ways, like Jyugo using his shackles in a magical battle.

A crossover with a modern - day action story could be really cool too. Spartacus and his crew could be brought to the present day through some time - travel mishap. They then have to navigate the modern world, learning about new weapons and technology. They could use their ancient fighting techniques in modern combat situations, like taking on a powerful criminal organization.

Maybe in the fanfiction, the three - tailed beast crosses over into a modern - day human world. People initially fear it, but then they discover that it has a gentle side and is actually trying to find its way back home. It could form a bond with a group of humans who help it on its journey, leading to many adventures along the way.