Who would most likely win in 'Tony Stark vs Thanos fanfiction' and why?

One group that could be the kidnappers are AIM (Advanced Idea Mechanics). They're always interested in getting their hands on advanced technology, and Stark has plenty of that. The Ten Rings terrorist organization is also a possibility. They've targeted Stark before and kidnapping him again would be a way to make a big statement. And let's not forget some rogue elements within S.H.I.E.L.D. who might think that Stark is a threat and kidnap him to keep him in check.

Pepper would be a likely candidate. She has a close relationship with Tony already, so she'd probably step up and take care of him. She has experience dealing with Tony's antics, so she could handle baby Tony's needs too.

Naruto would likely win. Godlike Naruto implies he has extraordinary powers. Naruto has strong chakra reserves, and his signature jutsus like Rasengan are extremely powerful. Also, his ability to quickly adapt in battle gives him an edge over Orochimaru.

Thanos could also win in a fanfiction. He has incredible strength and the power of the Infinity Stones at his disposal. In a lot of fanfictions, the power levels are often exaggerated. Thanos could simply use the Reality Stone to make Iron Man's weapons ineffective or use the Time Stone to freeze Iron Man in time and then defeat him. His brute strength alone is enough to overpower Iron Man in a direct confrontation. And his experience in battles across the universe gives him an advantage over Iron Man who mainly operates on Earth.

One interesting scenario could be Tony Stark using his superior intellect to outwit Thanos in a battle of wits rather than just brute force. He might create a device that can nullify the power of the Infinity Stones for a short time.

It's hard to say. Naruto has his powerful Nine - Tails Chakra and Sage Mode. But the five kages are also very strong. However, Naruto has a habit of coming out on top in tough situations, so he might be the likely winner.

It really depends on the context. If it's a physical fight based on brute strength, Naruto would likely have the upper hand. He has access to the Nine - Tails' chakra which gives him superhuman strength. But if it's a fight that involves strategy and medical ninjutsu, Sakura could potentially win. She's a very intelligent fighter and her medical skills could be used in a creative way to disable Naruto.

Another option could be a tech - savvy human who has developed a device to control mutants. He believes that mutants are a threat to humanity and wants to subjugate them. He targets Jean Grey first because of her great power. Tony Stark, being a friend of Jean's and a lover of freedom, teams up with her. Stark tries to hack into the control device while Jean Grey uses her powers to resist the control and fight back against the villain.

Probably the other Avengers like Captain America. He could play a role in trying to save Tony or in the fight against Thanos that ultimately leads to Tony's death. Maybe Doctor Strange as well. Since he has knowledge of the future and the Infinity Stones, he might be involved in some way. He could either try to prevent Tony's death or his actions could inadvertently lead to it.

It depends on how the OC is designed. If the OC has super - powerful and rare Pokemon, it might have an edge. But Alain is a very experienced trainer, so he could also win with his battle smarts.