Gwen is one of his main allies. She has her own magical powers and often helps Ben in his adventures. They have a love - hate relationship at times but always come through for each other.
Lois Lane can be considered an ally. Although she is a journalist, she often gets involved in Superman's adventures and helps him in her own way, like providing information or moral support.
Well, it's obvious that Ben and Gwen are the central characters. Ben is the one with the cool Omnitrix. He can turn into aliens like Heatblast or Four Arms. Gwen, his cousin, is no less important. Her magic powers range from creating force fields to shooting energy blasts. Together, they make a great team. Ben brings the alien - powered muscle, and Gwen brings the magic - infused intelligence. They face all kinds of challenges, whether it's an evil alien invasion or a mysterious magical anomaly, and they rely on each other to get through it all.
Batman would likely be one of his main allies. They both have a strong sense of justice and a determination to protect the city. Their skills are different but complementary. Batman's detective skills and high - tech gadgets combined with Naruto's ninja abilities would make them a great team.
Since it's called 'ben's girls fanfic', Ben is likely one of the main characters. As for the girls, without more information, it's difficult to say exactly who they are. They could be original characters created for the fanfic, or they could be characters from the source material that Ben is associated with.
Kirby is the star of the Kirby Star Allies story. He's the protagonist that drives the whole plot forward with his ability to turn foes into friends. There are characters like Meta Knight who also has an impact on the story, sometimes as an ally and sometimes as a bit of a mystery. And let's not forget the cute little Waddle Dee. These characters interact with Kirby and each other, creating a story full of adventure, friendship, and battles against the bad guys that threaten their world.
The main character is Kirby, of course. Kirby's ability to make allies is the core concept of the game and likely the novel. Other characters such as Ribbon from previous Kirby games might also make an appearance as a main character in the 'Kirby Star Allies novel'. And don't forget the enemies - turned - allies that Kirby encounters. They could also be main characters as they are an integral part of the Star Allies concept.
Definitely the Na'vi. They are the native inhabitants of Pandora and would likely see Naruto as an ally, especially if he shows respect for their land and culture. His skills could be useful to them in their fight against any common enemies.
Sasuke could be one of his main allies. Despite their past differences, they could put aside their issues to support Naruto in his role as the King of Monsters. Sasuke's powerful combat skills would be a great asset in battles against those who oppose Naruto.
The Occult Research Club members in general would be his allies. They are used to dealing with all sorts of supernatural situations, and Naruto's skills would be a great addition to their group. Kiba Yuuto, for instance, could bond with Naruto over their combat - loving natures. They could train together and come up with new strategies for fighting enemies in the DxD world, whether they are devils, fallen angels or other threats.
The other ninja clans in Konoha could be his allies as well. Since Baruto has shown his strength and determination, clans like the Uchiha (if they still exist in the fanfic) and the Hyuga might support him. They would see him as a unifying figure who can lead Konoha to a better future and protect their interests within the village.