Arrow's Main Villains Ranked From Worst To Best
4. Prometheus
Speaking of villains borrowed from Batman...
When Oliver runs for Mayor in season five, a man named Simon Morrison secures the position of District Attorney under the alias Adrian Chase. Over time, it is revealed that Chase is the son of Justin Claybourne, a man who was on Oliver's list in season one, and killed by him as a result. This is Chase's major motivation to get close to the Queen family and ultimately ruin them for what they did to him.
To exact his revenge, he is trained by Talia al Ghul of the League of Assassins, who, conveniently enough, is also now without a father thanks to the Green Arrow. Dressed as a ragged reflection of the emerald archer, 'Prometheus' commits a number of murders in Star City, earning him the media nickname of the Throwing Star Killer.
His resolve is only strengthened after Team Arrow discover his identity, which he demonstrates by kidnapping them, along with Oliver's loved ones, and transporting them to Lian Yu, the island Oliver was stranded on for five years prior to the series.
An epic showdown ensues, and, on the brink of defeat, Chase shoots himself in the head to rob Oliver of the victory. His death triggers the explosion of the entire island, killing the mother of Oliver's child, Samantha Clayton. It probably goes without saying that Prometheus had the last laugh there.