Definitely Seven of Nine. Her unique backstory as a former Borg and her struggle to regain her individuality make her a great character for crossovers. In fanfiction, she might be paired with characters from other shows who have also faced identity crises. Also, Worf is popular. His Klingon heritage and his place in Starfleet can lead to some intense interactions when he meets characters from other fictional settings with different warrior cultures.
Captain Picard is often very popular. His leadership skills and moral compass make him a central figure in crossovers. He can interact with other characters in really interesting ways. Data is also a favorite. His quest to understand humanity can take on new dimensions when he's in a crossover situation, like interacting with characters from different universes who have different concepts of what it means to be alive.
Guinan is quite popular too. Her mysterious nature and her long - lived perspective can add a lot to crossovers. She could potentially have insights about other universes or characters that no one else does. And Riker, with his charm and his role as Picard's second - in - command, often has engaging storylines in crossovers, whether it's in a leadership role or just in a more personal interaction with characters from other series.
Deanna Troi, the ship's counselor, is important as she helps the crew deal with emotional and psychological aspects of their adventures. In crossover novels, these main characters interact with characters from other Star Trek series, which can lead to new relationships and challenges. For instance, they might meet Kirk or Spock from the original series, and these interactions can be both exciting and full of conflict as different leadership styles and values collide.
Q is a character that is frequently used in Star Trek crossover fanfiction. His omnipotent and mischievous nature can stir up all kinds of chaos when he interacts with different Star Trek crews. He can easily create situations that force characters from different series to work together or face challenges they never expected. Another popular character is Seven of Nine from Voyager. Her Borg - related backstory and her journey towards humanity can be a great addition to crossovers, especially when paired with characters who have different views on artificial intelligence.
Diane Duane has also written some excellent novels in this area. Her works often explore the more spiritual and philosophical aspects of the Star Trek universe, adding depth to the overall narrative.
The main characters include Captain Jean - Luc Picard. He is the strong and wise leader of the Enterprise. Then there's Commander William Riker, Picard's second - in - command. Data, the android, is also a central figure, always curious about human emotions and behaviors. Dr. Beverly Crusher is another main character, taking care of the medical needs on the ship. And of course, Geordi La Forge, the chief engineer with his special visor that allows him to see in different spectra.
Another possible storyline is that a long - lost relic or technology from an earlier Star Trek era resurfaces in the Next Generation timeline. The crew then has to work with the knowledge and help of those associated with the relic's origin. This could involve solving ancient mysteries and dealing with the consequences of technology that was perhaps not fully understood in the past.
Q from Star Trek is also a favorite in crossovers. His omnipotent and mischievous nature can create all kinds of chaos in the Star Wars universe. He could play tricks on the Jedi Council or have a face - off with the Emperor. And Yoda is another one. His small stature but great wisdom can be a source of inspiration or confusion for Star Trek characters who might not be used to such a unique form of wisdom.
Darth Vader and Spock are also popularly paired in these crossovers. Vader's dark power and Spock's logical Vulcan nature create a great contrast. Fans like to explore how Spock might try to understand Vader's fall to the dark side, or how Vader would react to Spock's unemotional exterior. Princess Leia and Uhura are another pair that gets a lot of attention. Their strong female characters could collaborate on various missions and share their experiences of being in male - dominated fields in their respective universes.
One popular theme is the exploration of new planets and species. Fans often write about the crew's encounters with never - before - seen aliens and the challenges that come with understanding and interacting with them. Another theme is the relationships between the characters, like the friendship between Geordi and Data, and how they develop over time.
Jean - Luc Picard is one of the main characters. His leadership and wisdom continue to be central to the stories. Data also remains an important figure, with his exploration of humanity still a key theme. William Riker and Deanna Troi are also often featured, along with Geordi La Forge, whose engineering expertise is valuable in various situations.
One interesting idea could be a crossover with another sci - fi franchise like 'Doctor Who'. Imagine the Doctor and the crew of the Enterprise - D interacting, with their different technologies and philosophies clashing and meshing. Another idea might be a crossover within the Star Trek universe itself, like bringing in characters from the original series into the Next Generation era in a unique way, perhaps to solve a galactic - scale mystery together.