Foxes are quite common. Given Naruto's connection with the Nine - Tailed Fox, it makes sense that in fanfiction, he might be able to control other foxes. They can be used for scouting or as distractions in battles.
One idea could be that Naruto gains some new power or jutsu that allows him to control Anko's actions in a non - malicious way. Maybe it's a form of genjutsu that he accidentally uses on her during a training session, and then has to figure out how to reverse it.
Well, in some fanfictions, Naruto might control the heartless through his strong will and the power of his chakra. Maybe he uses some new jutsu he developed specifically for this purpose.
One consequence could be that it disturbs the balance of the ninja world. The dead are supposed to rest, and by controlling them, Naruto might be messing with the natural order. This could lead to other ninja clans or villages seeing him as a threat.
One potential enemy could be the Protoss from the StarCraft universe. The Protoss are highly advanced and have powerful psionic abilities. They might see Naruto controlling the Zerg as a threat to the balance of power in the galaxy. Another enemy could be other ninja clans from Naruto's world who might fear the new power Naruto has gained with the Zerg and try to stop him.
In a 'Naruto controls snow' fanfiction, it could be that Naruto is cursed by an enemy. As a result, his chakra is somehow linked to snow. At first, he struggles to control this new power, but with the help of his friends and some intense training, he masters the ability to control snow and turns it into a powerful weapon against his foes.
In the fanfiction where Naruto controls the Tesseract, it could change the power dynamics completely. Naruto is already a powerful ninja, but with the Tesseract, he could become near - invincible. He might be able to use the Tesseract's space - bending abilities to surprise his enemies in battle. For example, he could suddenly appear right in front of them or make them disappear into another dimension. Also, he could potentially use it to heal wounds or revive the dead, if he discovers all of its powers, which would make him not just a hero in his own world but maybe in the entire multiverse of the fanfiction.
In these fanfics, a major theme is the balance between good and evil. Naruto controlling evil is often about finding that fine line between using evil for good purposes and not tipping over into becoming evil himself. Another theme is the discovery of new powers and abilities. It's not just about controlling evil, but also about how Naruto acquires this power, what it does to his existing abilities, and how it changes his approach to combat and problem - solving. Additionally, there's the theme of the unknown. Since controlling evil is such an unorthodox concept in the Naruto universe, there's always the sense of the unknown and the risks associated with it, which adds to the tension in the story.
In a more comical fanfiction, Naruto might accidentally control Anko's eating habits. Let's say he uses a new jutsu that backfires and instead of affecting an enemy, it affects Anko. So, every time Naruto thinks about a certain food, Anko starts craving it and can't resist. This would lead to some really funny situations as Anko tries to fight against this strange control while Naruto is desperately trying to figure out how to undo the jutsu.
One interesting 'Naruto Controls Heat' fanfiction could be where Naruto discovers a new jutsu that allows him to manipulate heat in unique ways. For example, he might use it to create heat barriers or to superheat water for various strategic purposes during battles.