Love Makes You Crazy: Yin's darker powers start manifesting themselves out of a desire to protect Hei.
Manipulative Bastard: Claude, Claude, Claude. He uses his Master of Illusion powers to impersonate Amber to put Hei off balance, briefly does the same to Amigiri, then pretends to be Amigiri to get most of the EPR survivors to try to kill Hei while he slaughters the rest of them.
Not So Stoic: Hei proves beyond a shadow of a doubt his status as a Kuudere after he rescues Yin from Syndicate agents.