Star Wars - "Do you have the slightest idea how little that narrows it down"

No it is not. He just says "You killed my father", which is a generic statement; there's no "My name is…" or "Prepare to die" to be seen.

Actually, I already looked it up, and that's not where it's from; this comic is called "Skywalker Strikes". It is, however, part of the same group of publications from Marvel circa 2015.