Board Thread:General Discussion/@comment-45383841-20200408000445/@comment-39718735-20200523052037

He means King Crimson, I'd say it's cause any time Diavolo has to personally use King Crimson is to protect his own identity, he's pissed off cause he's one mistake away from revealing his identity and possibly losing his way of life (this guy's kinda similar to Kira on that huh, perhaps that's why KC and KQ are shown to be serious/angry all the time).