Who could be the main antagonists in 'izuku all for one quirk fanfiction'?

It could be other villains who are jealous of Izuku's powerful dragon quirk. They might see his quirk as a threat to their own plans for domination or chaos.

Some of the teachers at U.A. might also be antagonists. They could be secretly working for an organization that wants to control Izuku's powers for their own evil purposes. They would pretend to be helpful while actually setting traps and spreading misinformation about him.

Perhaps a new villain could emerge who specifically targets Izuku because of her new gender identity. This villain might see her as a symbol of change in the hero society that they don't want to happen. So they constantly attack her and try to break her spirit, thinking that if they can stop her, they can halt the progress of female heroes in general.

A villain with an ice - based quirk could be a great antagonist. The contrast between Izuku's fiery Phoenix quirk and the ice - based powers would create interesting battle dynamics. The villain could be constantly trying to freeze Izuku and put out his phoenix flames.

His classmates could be his allies. They might be intrigued by his Pokemon - quirk and offer to help him train or use it better. For instance, Ochaco could use her zero - gravity quirk to assist Izuku in some Pokemon - quirk - related training exercises.

One idea could be Izuku struggling to control the All for One quirk at first. He might accidentally absorb quirks he doesn't want, leading to chaos. For example, he absorbs a quirk that makes him grow extra limbs and has to figure out how to hide it. Another could be that villains target him more, thinking he'll be easy to corrupt with such a powerful quirk.

Often, in 'izuku super soldier fanfiction', there are villains from the original series that become more menacing when facing Izuku as a super soldier. For example, All For One might be an even greater threat as he tries to either control or destroy Izuku.

Maybe there are some anti - hero groups who target Izuku because they see him as a threat to their plans. They could try to kidnap him or steal his research on heroics from the university.

Bakugo is often paired with Izuku. Their complex relationship from the original series can be further explored in fanfiction with Izuku's growth quirk. All Might is also a common character paired with Izuku. He could play a role in guiding Izuku to control and develop his growth quirk. Ochaco is another one. She might be involved in stories where Izuku's growth quirk affects his relationships, especially romantic ones.

Bakugo is often paired with Izuku. Their relationship is complex in the original series, and in fanfiction with Izuku's time quirk, it could add more depth. Bakugo might be jealous of Izuku's new power at first but then come to respect it as they face challenges together.