No. Fanfiction should generally be appropriate for a wide range of audiences. 'Sex' in the title indicates that it may contain inappropriate or adult - themed content, which is not suitable for public consumption or in line with the values of a healthy fan community.
Some strike back fanfiction stories might take a different genre turn. Instead of the typical action - adventure, it could be a more psychological thriller, with the characters dealing with internal as well as external conflicts. Maybe a story where they have to question their own loyalties and motives in a way that the original show didn't fully explore.
Conflict is also a major theme. This can be in the form of external threats like terrorist organizations or in the form of internal conflicts between the different groups of characters from the crossover. For example, differences in ideology or operating procedures can create tension. And adventure is common too. The characters are often thrown into new and unfamiliar situations that they have to explore and overcome.
Strike Back is a show with action and adventure. Fanfiction related to it should ideally be about exploring the characters in different scenarios that are in line with the show's genre. However, if there's a 'sex' aspect in the title, it's not a proper or acceptable form of fanfiction as it goes against the norms of good taste and may not be suitable for a wide audience. So, it's better to avoid such topics.
Some 'Strike Back fanfiction' stories are really creative. For instance, there could be a fanfiction where the team has to face an enemy that is not from their usual type of threat, like a supernatural force or an extremely advanced technological enemy that is far beyond what they've faced in the show. There are also fanfictions that explore the emotional side of the characters more deeply. Maybe a story about how a character copes with post - traumatic stress after a particularly harrowing mission. And of course, there are the fanfictions that are just pure action, with non - stop shooting and high - octane chases similar to the most exciting parts of the actual 'Strike Back' show.
You can start by looking on fanfiction websites like Archive of Our Own (AO3). It has a large collection of fan - created works, including many for 'Strike Back'.
In some 'Strike Back OC Fanfiction', the OC is a former enemy turned ally. Their backstory of how they changed sides and their internal struggle between their old ways and the new team's values can make for a really engaging read. They might have secrets from their past that slowly unfold throughout the story, keeping the readers on their toes.
A scientist could be a main character. They might use their intelligence to figure out the enemy's weaknesses and develop new weapons or strategies for the human strike back.
One idea could be that humans discover a secret alien base on Earth. They gather all their scientific knowledge and military might to launch a surprise attack on the aliens. Using advanced technology reverse - engineered from captured alien devices, they manage to fight back effectively.