Definitely Kisame Hoshigaki. His shark - like appearance and water - based abilities could be really interesting in a crossover with the Pirates of the Caribbean world. He could be a fearsome sea creature that the pirates have to deal with. Also, Deidara would be a good choice. His love for explosions could create chaos in a crossover with the world of James Bond. He could be a new kind of terrorist threat that Bond has to stop.
In Akatsuki World Crossover Fanfiction, Sasori would be a suitable character. His puppet - making skills could be used in a crossover with the Inception world. He could create puppets that enter people's dreams. And Kakuzu, with his multiple hearts and love for money, could be an interesting character in a crossover with the Monopoly game world. He could be a player who is willing to do anything to win all the properties.
In Naruto, Naruto himself is often a popular choice. His positive attitude and powerful abilities make him an interesting addition to any crossover story. In Akatsuki no Yona, Yona is a very popular character to feature. Her journey from a sheltered princess to a strong leader provides a lot of material for fanfiction. So, a story featuring both of them interacting would likely be quite popular.
Pain (Nagato) is also quite popular. His ideology and his power are very appealing to explore in a fanfic. You can create stories where he has to face Naruto not just in a physical battle, but also in a battle of ideals.
Rias Gremory is also highly favored. Her beauty, power, and leadership qualities make her an interesting character to write about. In an Akatsuki High School setting, she could be leading her peerage in new challenges, like dealing with rival clubs or facing off against new threats within the school.
John Koenig is often a popular choice. His leadership skills and complex character make him a great fit for crossovers. He can interact with other strong leaders from different sci - fi shows and create interesting power struggles or alliances.
Monika is often a popular choice. Her strong - willed and somewhat controlling nature can make for interesting crossovers. She can be the one who tries to manipulate the new world or characters she's crossed into. Sayori is also popular. Her bubbly and at times sad nature can add a lot of emotional depth to crossovers, especially in more light - hearted or heart - wrenching scenarios.
Loki is often a popular choice. His ability to deceive and his stealth capabilities can create really interesting plotlines in crossovers. For example, if crossed over with a detective - themed universe, Loki could be the elusive criminal that the detective characters are trying to catch, using his Warframe skills to outwit them.
Ikaris is often a popular choice. His flight and laser - eye powers make him a formidable character in crossovers. He can easily be paired with other flying superheroes or those who can withstand his powerful attacks. Sersi is also popular. Her ability to transmute matter gives her a unique edge, and she can be interestingly paired with characters who have different elemental powers.
Spyro is always a popular choice. He's one of the most well - known Skylanders and has a rich backstory that can be easily incorporated into crossovers. For example, he could be the leader of a group of Skylanders from different areas coming together.
Krawk is a popular character. It has a cool and somewhat menacing appearance which can add an interesting dynamic in crossovers. Another is the Shoyru. It's dragon - like and can bring a sense of magic and power. The Lupe is also often used. It has a wolf - like appearance and can be portrayed as a fierce and loyal character in crossovers.
Illidan Stormrage is extremely interesting. His complex character, with his pursuit of power and his love - hate relationship with his brother, can bring a lot of depth to crossovers. Sylvanas Windrunner is also a great choice. Her undead nature and her thirst for vengeance can lead to some really dark and engaging crossovers. Additionally, Uther the Lightbringer can be a great character to feature. His unwavering faith in the Light can contrast or complement characters from other fictional settings.