Depends on what tense we want to use, I suppose. Present Simple - “He travels” - or present perfect - “He has traveled.”
I think “he journeys” would sound fine, or “he has arrived” would also work. And there was one other thing in the crawl…”by silencing their enemies” or something like that? I don’t think it needs anything else.
Ahh, it didn’t occur to me before, but if you agree that it sounds good, then just changing the tense is perfect, as “travels” is the same in British English. Then you could make it: “Meanwhile, Supreme Leader Kylo Ren travels to Mustafar, chasing whispers…”.
And it “rhymes” (if you will) with ANH crawl’s “Princess Leia races home”.