There's a fanfiction series that delves into the idea of Blue Beetle being sent to the Naruto universe during a time - travel accident. The author does an excellent job of portraying how Blue Beetle tries to adapt to the ninja culture. He has to learn about chakra and at the same time, uses his own powers to help the ninja in their battles against powerful foes.
A really creative plot is when the Blue Beetle's technology is used to enhance the Sharingan. In this fanfiction, a scientist in the Naruto world discovers a way to integrate the Blue Beetle's tech with the Sharingan, creating a super - powered eye that can not only copy jutsu but also analyze and predict the movements of opponents in a more advanced way.
Obviously Naruto would be one of the main characters since he is in the title. And probably the Blue Beetle or someone related to the Blue Beetle concept, like the previous bearers of the Blue Beetle power or the people who help Naruto understand the powers.
Well, it could be a story where Naruto somehow gets the powers of the Blue Beetle. Maybe he uses those powers in the Naruto universe to fight new and different foes, like combining his ninja skills with the high - tech abilities of the Blue Beetle.
Another idea is a time - travel fanfiction. Blue Beetle and Black Beetle could be sent back in time to a crucial moment in their predecessors' lives. They then have to make sure not to disrupt the timeline while also trying to gain some knowledge or power that can help them in their present - day battles. This would allow for exploration of their origins and how they've evolved over time.