I'm realising that despite that giant list I wrote down, I only seem to get requests for characters from original universes and bnha, but I'm not complaining since I'm well versed in bnha.
Here is a bnha oc from hiba_moktar123

Basics and grounding / character information

I'm going to say this here so I don't have to bring it up later, dragon based quirks are incredibly common in this fan base, so you're going to have to be very unique in the way you about this. It's kinda sad really, since dragon quirk concepts are normally pretty interesting, but awfully common. Now since you've written a story that has a fair few chapters so far, I'm not going to make you change her quirk because that would be unfair. Maybe if you keep the parts to do with temperature, like infrared, aka heat signature, and the fire scales and you could keep the lizard theme.

Of course you don't have to do this and what you've got is completely fine, but as someone who is also writing a piece for the series, the more unique a characters abilities, the more attention they get. Having an incredibly strong character doesn't mean that they are necessarily better than a character with weaker ones.

Like I said, you don't have to follow what I've said here, but at least make sure your character has room for improvement and can develop as the plot goes on.

Only thing here is to give her a wider range of hobbies, most people enjoy doing more than one or two things.

T

echnically, that is introverted, most introverted people open up and make friends as time goes along, though it is possible to be an introverted extrovert, basically someone who is introverted but more extroverted then most introverts, if that makes sense?

I recommend giving her a more detailed personality, since determined and hates seeing others in pain is common, it's completely fine and understandable considering they're training to be heros, but that's what makes characters like Bakugou, Shinsou and Todoroki so well liked by the fandom. They want to help people and are determined, but it's shown in many other forms that what you would expect, such as Bakugou's reaction to winning the sports festival.

I'm not saying get rid of these traits, I'm saying to build on them in a way that is unique to your character.

Relationships

I'm fine with this except why Endeavor is an enemy. Nothing here hints at any kind of relationship with Todoroki, otherwise I would understand. Most people in this fandom hate Endeavor, understandably, but they also forget that he is a prohero and the second best pro at that. He must be a good hero in order to get that far, so I hope that it's not a case of Endeavor being mean to your character for no reason.

I understand having your character being alone can open up a lot of possibilities, but there should be some kind of relation with someone, even if it's some random distant Uncle, it'll make the character feel more real.

I do like how, from what I've read so far, that her and Bakugou balance eachother out. I've seen a lot of stories where they clash, and I don't think Bakugou would get along with someone who clashes with him, for example, Todoroki.

Backstory

P

lease be very careful with having your character be bullied for their quirk. The only canon instances of people being bullied for their quirks are when their quirks are perceived as weak. In fact, the only instance we've seen as a character having a villainous quirk and wanting to be a hero is Shinsou, and people told him his quirk was cool but dangerous, he was never bullied for it. Having a character be bullied because they're 'monstrous' is incredibly common. Characters being bullied is common too, but not unreasonable and very plausible in real life scenerios, there are many reasons why people bully.

Here's a possible twist, how about Shinsou bully her in the care system, only for her to discover that he's insecure about his quirk being villainous and lashing out at her because of it, then they bond over their insecurities. That way, there's logic and reason behind the bullying, since most people bully others because they are insecure themselves.

Other / stats

Okay, I have a major issue here, sorry but those stats are way too high for a well balanced character. I recommend one 5 at most. You should always have at least one low stat in order for your character to remain balanced. Most of the numbers should be mid range, but all of the ones here are very high. If you're not careful about your stats there's a chance she may come across as a Marysue and that is dangerous for the reputation of your character. I highly recommend changing these.

Final thoughts
You have some good concepts and ideas here, but on order to make a more well rounded character some things must be changed. There are good aspects of this character of course, but this is currently mult longest review yet so I'm not going to point them all out since I'm here to point you in the right direction and help you improve. You have a good start to what could be a great character here, so good job!

*My critiques are simply at your request and to help improve your character. It is not my intention to cause any offence and you of course do not have to listen to what I've said. This us all just a bit of fun and I apologise if I have done any kind of damage*