Is there anyone in the Fireteam who is terrified of someone? Other than Stoom because she is the definition of Terror

Just inside their own crew? Nah, not really. Aside from most everyone (Killy excluded) having a healthy fear of becoming Stoom’s target, they’re a pretty tight knit group underneath all the bickering, annoyances and feigned dislike of each other. Even Stoom is fond of them all, even though she doesn’t show it much at all. She just has zero tolerance for bullshit, lol!

In the Destiny cast as a whole? Probably, will need to consider that a little!