Red has a...singular purpose. One that overrides most anything else. Do you recall, during our, ah..."bust-a-base" —

[Only Blue could be so willing to go along with Prompto's shenanigans.]

— our plan to take captive and interrogate one of the Niflheim generals? "Targeting metal men will yield little in the way of reconnaissance, but bones bend easily"?

[Gray laughs softly again, but this time with far less mirth in it.]

That's Red for you.