Welcome back to Colors, Jim! I missed you
Here is some feedback I have for your profile on Jim. I haven't looked at your other characters that are also submitted yet, so it's possible some of my feedback may end up being redundant, or may apply to more than one character because of the way Cassandra and Jim's backstories naturally intersect.
1. In the outfit description, you note that Jim once had a
"lack of proper aura". This seems a little strange in the context of the setting, where huntsmen and huntresses generally seem to be expected to generate some level of aura in order to be admitted to a combat school or a huntsman academy (the obvious exception being a character like Jaune that deceived their way into the school). You could probably just leave out what he used to wear and focus on his current outfit.
2. It's noted in this backstory that Cassandra was a mercenary, and the role of a mercenary is referenced a few times throughout. The role of mercenaries in the setting of RWBY is largely unclear when considered against Huntsmen and Huntresses, who are essentially kingdom-sanctioned mercenaries operating under a different title. I suppose it's possible that there are smaller mercenary companies that operate without license or comparable regulation. I only mention this because the option of simply becoming a mercenary and requiring none of the training of a huntsmen or huntress seems like it would, in some regions of the world, invalidate the benefits or purpose of a huntsman academy altogether. For that reason, it might be beneficial to elaborate on the nature of this work and how legal it may or may not have been.
3. Building a little on my above feedback, Jim is stated to have been a bodyguard/mercenary to various VIPs prior to being certified as a huntsman, without any specifically given qualifications or formal training. This raises a question: why would someone wealthy or influential hire a bodyguard that lacked any obvious credentials? Why would they not simply seek out the services of a huntsman? I think there are a few ways this could be answered. Wealthy people might have wanted someone
'off the books' to help them for various reasons, or they might have otherwise not trusted kingdom-sanctioned warriors. It's also possible that Jim forged credentials, or had underworld contacts who may have worked as intermediaries that helped him find unregulated work. Obviously how you elaborate on this is up to you.
4. This backstory made me want to learn more about the huntsman that was there when Jim reached the heights of his semblance. Who were they, and why did they sponsor Jim's journey to Beacon? It seems implied that it was because of his strength, but it seems equally reasonable that this huntsman might have witnessed what occurred and assumed Jim was too reckless or dangerous to sponsor. What made this person decide to help?
5. As the backstory reaches the 19-22 section, it starts to feel progressively more rushed. Plot events from Jim's past are referenced but aren't fully elaborated on - while I recognize these as references to real plot events that you wrote out in the past, a new or fresh reader may have a harder time following this part. I think most of these details are probably fine to keep, but the presentation could use a little attention. I think further elaboration is one avenue you could take, though it would obviously result in a longer, wordier profile that asks for more attention from the reader. Alternatively, you could try to make this section of the profile more succinct and tidy so that it raises fewer questions. I'm not suggesting you change what happened, only that you adjust how you present it.
6. Colors hasn't made official rules for Huntsman characters to my knowledge. That said, I personally don't like the idea of everyone simply being forced to play students until all the groundwork is laid necessarily, and I'm open to the idea of everyone being able to play huntsmen-type characters so long as these characters are made in the spirit of collaboration. With that said, I think it might be worth including a note somewhere on the profile what Jim does that keeps him active in the Vale region. It might also be worth it to include some kind of justification for why he might be seen or interacted with at Beacon. Perhaps he's a student-mentor, studying to become a professor someday, or some other thing.
While I see some room for improvement regarding this profile's presentation, I don't think it's anything that should bar you from getting to play Jim. You can always iterate on him and make changes or improvements as you play. My vote is a yes.