In the 'Ben 10' series, Ben Tennyson is the main character. He has a device called the Omnitrix which allows him to transform into various alien forms. Gwen Tennyson is Ben's cousin. She also has magical abilities and often teams up with Ben in their adventures.
In one adventure, Ben and Gwen had to deal with a group of shape - shifting aliens. Ben's ability to transform into different aliens was put to the test as he had to constantly adapt to the changing forms of the enemies. Gwen used her magic to detect the true forms of the aliens. They combined their skills, Ben's physical combat skills as different aliens and Gwen's magic detection and support, to defeat the group and save the day.
Lee Everett is often paired with Ben. Since Lee is a central character in the game, his relationship with Ben can be explored in many ways, like a mentor - mentee relationship or a friendship based on mutual survival.
You could write a fanfiction about Ben going to an alternate universe where the Omnitrix works differently. In this universe, the aliens he transforms into have different powers and personalities. Or perhaps a story where Ben's identity as the wielder of the Omnitrix is exposed to the whole world, and he has to deal with the consequences, like becoming a target for every villain and also facing the fear and adoration of the general public.
Well, there's also Diamondhead. He's an alien made of crystal - like substances, very tough and can project crystal shards. Ripjaws is a fish - like alien, great for underwater adventures and combat. And Wildmutt, who has enhanced senses like smell and hearing, and is very agile in combat despite not being able to talk.
One interesting crossover is when Ben's aliens interact with the dragons in Game of Thrones. For instance, Ben's Upgrade form could potentially bond with a dragon, creating a super - powered dragon - like creature. It's a really cool concept.
Ben Tennyson is obviously a must - as he is the main character. Gwen is also very popular as she has her own powers and often helps Ben. Kevin Levin is another great choice. His ability to absorb materials and his complex relationship with Ben add a lot of depth to the story. Vilgax is a classic villain that makes any fanfiction more exciting. He's powerful and has a long - standing rivalry with Ben.
Well, in this fanfic, Ben would be a central figure. Other important characters could be those who have different views on survival. For example, there could be a tough - as - nails leader type who clashes with Ben's more idealistic views. And then there might be a younger character that Ben feels protective of, like a child who has lost their family.
Sure. One popular 'Ben 10 Game of Thrones fanfiction' might be the one where Ben Tennyson uses his alien powers to protect key characters in the Game of Thrones world. For example, he could use Heatblast to fight off White Walkers.
There might be a fanfiction where Ben forms an unexpected alliance with other characters. This alliance could lead to new strategies for survival and some really cool action sequences as they face the walkers together. For example, he teams up with a character who has different skills, like a great tracker, and they complement each other well.