I was a bit rushed with my last two posts, so I neglected to mention that the last part of Mr. 44's entry is rather awkwardly phrased and kinda hard to understand. I think a better way to say it would be "to study the BROX's cognition, such as its combat ability and how it handles human interaction in real-life scenarios." The Oxford comma gets removed since the restructuring means there are only two parts referring to the studying of its cognition rather than three parts referring to the studying of BROX in general. Also, the shorter, less-detailed phrase gets moved up front since it reads easier going into the longer phrase rather than the other way around. Lastly, I rephrased the bit before "human interaction" to avoid using the word "ability" again so soon after its previous use (it's not grammatically wrong; it's just a pet peeve of mine).
Oh, and depending on what BROX is, you might wanna swap out my it/its for he/his. I just made an educated guess that since BROX is something artificial with prototypes, it could become either a male form (like Mr. 44) or a female form (or non-binary, too, I guess), but this is your story, after all. Also, I was convinced that BROX/Mr. 44 was a robot or something, but rereading the description showed me that there's not really much evidence to support that, so I'm not sure which pronouns would be appropriate.
EDIT: Rereading Dan Maku's description, I'd like to correct my previous correction to be "When he's" instead of just "When"