Definitely Orochimaru. He has great power and knowledge, and if Naruto could convince him, he would be a valuable ally. Another one could be Pain. Since Pain had his own ideology about peace, Naruto could find common ground with him and unite him.
Another one is Goro. He's a petty thief in Naruto fanfiction who has a special skill of being able to blend into the shadows. He steals from local merchants in Konoha. Goro may not seem like a big threat at first, but his actions can sometimes lead to bigger problems, like when he steals important items that are needed for a mission.
It could be a variety of villains. Maybe some of the traditional Naruto villains like Orochimaru or Pain could be in the story and Naruto kills them. Or perhaps in this fanfiction crossover, there are new villains created that are a combination of Naruto - style threats and Justice League - type menaces. It's hard to say exactly without reading the fanfiction, but it would be interesting if it included some well - known Naruto baddies being taken out by Naruto in a new setting with the Justice League around.
One of the best villains in fiction is Darth Vader from 'Star Wars'. His menacing appearance in the black suit and his deep, raspy voice make him instantly recognizable. His complex backstory, being lured to the dark side and his internal struggle between the remnants of his good side and the power of the Sith, adds depth to his character.
One of the best villains in fiction is Voldemort from the Harry Potter series. He is extremely powerful and his goal of purifying the wizarding world by eliminating non - pure - blood wizards makes him a terrifying antagonist. His snake - like appearance and cold - blooded killings add to his menacing nature.
One of the best villains is Voldemort from the 'Harry Potter' series. His pursuit of power, his disregard for human life, and his ability to strike fear into the hearts of so many make him a truly great villain. He's also highly intelligent and manipulative, which adds to his menace.
One of the best Pokemon villains in fanfic is Giovanni. He has a complex character with his Team Rocket operations, always plotting something big. His cool demeanor and powerful Pokemon make him a formidable presence.
One of the best villains in fiction is Darth Vader from 'Star Wars'. His menacing appearance in black, deep voice, and his powerful use of the Force make him iconic. He represents the dark side of the Force and is a symbol of tyranny and power-hunger in the galaxy far, far away.
Small villains in Naruto fanfiction can add depth to the story. For example, they can create minor conflicts that the main characters have to deal with on a regular basis. This shows the day - to - day challenges in the Naruto world.
Pain is also a very iconic villain. He is the leader of the Akatsuki organization at one point. His Rinnegan ability gives him great power, and his ideology about bringing pain to the world in order to create peace is both complex and terrifying.