He could have the power of flight. It's a common ability associated with angels, and it would give Naruto a huge advantage in battles and also in getting around quickly.
One possible power is enhanced healing. Angels are often depicted as having the ability to heal wounds and even revive the dead in some stories. So Naruto might be able to heal himself and others much more effectively. He could also have some form of light - based attacks, like shooting beams of holy light at his enemies. This would be a very different type of attack from his regular ninja techniques and could be extremely powerful.
Well, if Naruto has an angel bloodline in fanfiction, he might possess the power of purification. This means he could cleanse evil or negative energy from a place or a person. His speed and strength could be supernaturally enhanced, far beyond what his normal ninja training could achieve. He may also have the ability to communicate with spiritual beings or gain insights from a higher plane of existence, which could help him in making strategic decisions during battles or in understanding complex situations in the ninja world.
Well, it could be something like the ability to control elements in a completely new way. For example, instead of just the basic five elements in Naruto, the new bloodline might allow for the manipulation of light or dark energy. Maybe it gives the power to teleport short distances instantly, which would be a huge advantage in battles.
He could have the power of contagion. Naruto might be able to spread a weakened form of the virus to his opponents, which could slow them down or disrupt their chakra flow. Another possible power is enhanced adaptability. The virus in his bloodline could make his body adapt quickly to different situations or attacks, like developing immunity to certain jutsus.
Another possible ability could be purification. The angel bloodline might be able to purify corrupted chakra or evil spirits. In the Naruto universe, there are many instances of dark forces and cursed chakra. A character with this bloodline could be the key to cleansing such malevolent entities. For example, they could purify a village that has been infected by a dark curse or a powerful demon's influence.
It could be the power to control others' emotions through singing. For example, the character could sing a sad song and make the enemies feel depressed and lose their will to fight.
The powers could be related to the elements. For example, if Naruto had a Zanpakuto bloodline, his Zanpakuto might be able to control fire in a more refined way than his normal jutsu, like creating intense blue - white flames that can cut through anything.
In this fanfiction concept, Naruto having the Hulk bloodline could lead to some really interesting interactions. His transformation could be tied to his emotions, like in the Hulk's case. For example, if he gets frustrated with the constant threats to the Hidden Leaf Village, he could transform. In this new form, he might not just have physical strength but also some unique abilities related to the Hulk's lore. Maybe he can jump really high or have a super - strong roar that can stun enemies. He would then have to find a balance between his ninja way and this new, brute - force - oriented power.
The angel bloodline might be neglected in the fanfiction due to the lack of connection to the existing Naruto lore. In the Naruto world, there are already established power systems and lineages. If the angel bloodline is not carefully tied to these existing elements, it may be pushed to the side. Additionally, the writer might be saving it for a big reveal later in the story, so it appears neglected in the early parts.
Well, one possible ability could be the power of flight. Just like traditional angels, those with the Black Angel Bloodline might be able to soar through the skies of the Naruto world. Another ability could be some sort of dark energy manipulation. They could use this dark energy for offensive purposes, like shooting out dark projectiles. Also, they might have enhanced senses, which would be useful for detecting enemies or finding hidden objects in the ninja world.
In fanfiction, Naruto could have the power to control time. He might be able to freeze time during battles, giving him an edge over his opponents. Another strange power could be the ability to communicate with all living things. This would allow him to understand the thoughts and feelings of animals and plants, and use this knowledge to his advantage in various situations.
Well, perhaps the bloodline could grant superhuman strength like Killer Croc has in the DC universe, which in the Naruto world might translate to being able to break through earth - style jutsu defenses more easily. Also, it could give the ability to swim at great speeds and hold one's breath for long periods, useful for underwater missions or battles near water sources in the Naruto world.