Arrow Season 4: 10 Characters That Absolutely Cannot Die

10. Nyssa al Ghul

Who She Is: Nyssa al Ghul – also known as Nyssa Raatko – is the daughter of the former Ra’s al Ghul and a deadly member of the League of Assassins. She fell in love with Sara Lance after rescuing her from Lian Yu, but her father viewed her affections as a weakness and used them to pass her over as his heir. Although she's proved willing to play by Oliver’s “no killing” rule in Starling, Nyssa has never been afraid to cross the line if it suited her.

Why She Cannot Die: Nyssa is an antihero at best and a villain at worst. Her motives are almost always murky, but she’s only fought against Team Arrow if she had a legitimate grievance. 

With her father now out of the picture as a vengeful force, former lover Sara unlikely to turn against her friends and family in Starling, and herself short enough of allies in Nanda Parbat that her forced wedding to Oliver went off without a hitch, there would simply be no point or far-reaching narrative consequences to killing her.

Katrina Law is a recurring guest star, and it’s hardly necessary for Arrow to kill off its most prominent surviving LGBT character and yet another woman for the sake of spectacle. She certainly cannot die without first enacting some vengeance on Malcolm Merlyn.