Well, if we consider the fanfiction concept, he could inherit Naruto's ability to form strong bonds with others, which is like a superpower in itself. In terms of physical abilities, he could have Naruto's speed and strength enhanced by chakra. And from Harley Quinn, he might get her mental resilience and her ability to manipulate situations to her advantage. This would make him not only physically powerful but also very smart in dealing with different kinds of opponents and situations, as he has a blend of two very distinct sets of skills and traits.
Naruto being Harley Quinn's son in this fanfiction could inherit a strange mix of powers. From Naruto, he could get the nine - tailed fox's chakra, which gives him immense strength and regenerative abilities. From Harley Quinn, he might inherit her skill with weapons like her mallet, but also her ability to adapt quickly in chaotic situations. This would be a really interesting blend of two very different power sets, allowing him to be both a strategic fighter like Naruto and a wild card like Harley Quinn.
He would probably inherit Wolverine's healing factor. So Naruto would be able to recover from injuries much faster. Maybe he could also have some form of adamantium - like bones or claws, which would be a really cool addition to his ninja skills.
Since Yoruichi has strong spiritual energy in her world, Naruto might inherit some form of enhanced chakra that has spiritual aspects to it. This could give him new jutsu or abilities that are a blend of his original ninja skills and this new spiritual - chakra power. For example, he could use his new power to sense things in a different way, like Yoruichi can sense spiritual presences.
He could inherit time - related powers. Maybe the ability to slow down or speed up time, which would be a huge advantage in battles. He might also be able to see into the past or future, which could help him in making strategic decisions.
Since Black Widow has a lot of experience with different types of weapons, Stiles might inherit an aptitude for weaponry. He could be a natural at using guns, knives, and other gadgets. Also, given Black Widow's training in mental discipline, Stiles could have a strong will and be able to resist mind - control or other forms of psychological attacks, which would be a very useful ability in the dangerous situations often found in fanfiction.
He could inherit some of the unique Uzumaki sealing techniques. Since Mito was an Uzumaki and was known for her sealing abilities, Naruto might be more proficient in that area. Maybe he could use seals in combat more effectively or create more powerful sealing jutsu.
Perhaps Naruto is raised in a world where both the Naruto and DC elements are combined. He grows up learning ninjutsu but also has a penchant for Harley Quinn - like pranks. His story could be about him trying to bring peace to this mixed - up world. He uses his Rasengan in new and creative ways, like adding some of Harley's acrobatic flips to his attacks. And he has to deal with villains who are also a combination of Naruto - style bad guys and DC villains.
He might inherit Naruto's shadow clone jutsu. This would be really useful for Markov. He could use the clones to gather information, fight multiple enemies at once, or even learn new skills faster by having the clones practice simultaneously. Also, Naruto's enhanced physical strength and speed, which come from his chakra, could be passed on to Markov, making him a formidable fighter in the fanfiction.
In this fanfiction scenario, Naruto would inherit a host of Saiyan powers on top of his ninja skills. For starters, he would have the Saiyan's natural fighting instincts and the ability to quickly recover from injuries. His power level would constantly increase as he fought, similar to how Saiyans get stronger through battles. His existing jutsus like the Rasenshuriken could be infused with Saiyan energy, making it not only cut through opponents but also blast them with a powerful ki - like force. And with his Saiyan tail, if he had one, he might have an additional form or power that was unique to him, perhaps something that combined the power of the Great Ape form with his Nine - Tailed Fox form.
Naruto could inherit Frieza's ability to survive in space and extreme environments. Along with that, his Rasengan could take on new forms influenced by Frieza's energy. For example, it could be a purple - colored Rasengan with the destructive power of Frieza's attacks. He may also gain the power to transform like Frieza, with each transformation increasing his strength, speed, and overall combat capabilities.
Issei might inherit Naruto's chakra. This would give him the ability to perform ninja techniques like the Shadow Clone Jutsu. He could create multiple clones of himself to confuse enemies or help with tasks. Also, he could potentially inherit Naruto's ability to sense negative emotions, which would be useful in detecting threats.