YOU SAID:
joel is a reprobate criminal who dislikes non-reprobate criminals
INTO JAPANESE
ジョエルは非凶悪犯罪者を嫌う凶悪犯罪者です
BACK INTO ENGLISH
Joel is a violent criminal who hates non-heinous criminals
INTO JAPANESE
ジョエルは非凶悪犯罪者を嫌う暴力犯罪者です
BACK INTO ENGLISH
Joel is a violent criminal who hates non-heinous criminals
That didn't even make that much sense in English.