You should not be double posting, that is, making a second new post within a few minutes, especially if no one else has chimed in or replied to your thread. If no one has responded and it has been less than a few hours, the more polite thing to do is to simply edit your first post to add in any additional thoughts or statements rather than making a whole new separate post.
It also would have been more appropriate to keep this in your initial thread as it is still about the helmet you wanted to make, but, here we are, and the answer to your question is that in Lore/Canon ODSTs only used the ODST helmet with their gear. ONI operatives wore the Recon Helmet with modified ODST or Marine armor sometimes, like Dare did in ODST, but in the rest of their Canonical appearances ODSTs are only depicted wearing their specific helmet, not any of the other MJOLNIR helmets. Some Lore for various other Helmets describes them as being initially designed for other branches, like Air Assault being developed for UNSC Army Airborne Units at first, the MP helmet being used by Military Police, and the pilot being developed by the Air Force, we have yet to see a canon appearance of an ODST using a different helmet like the Mark V (B) and as such, in the optional Deployment Program here at the 405th, we consider it a "Mix and Match" and would would limit it to a Tier 1 Deployment status:
Congratulations on building your first Halo costume! You've taken your first step into a larger world. If you wish to delve deeper into your passion, your next step is the Deployment system. AugmentedHuman013 and MNKr are the current Division Membership Officers if you have any further...
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