Thread:Harostar/@comment-16729840-20151010232421/@comment-24494906-20151010235040

Well, you can find that he's called Jack by other characters in the manga (I think the second-last chapter of Jack and chapter 118 of TG?).

The rest of that entry, though, does not come from the manga, AFAIK.

Honestly, I feel a number of trivia sections should be cleaned up. Many people use them as a "catch-all" section, and that's not the way they should be used.