Board Thread:Arrow discussions/@comment-5635877-20170715164837/@comment-27700324-20170730235004

Stryzzar wrote: Second bit cements it. Savitar also tried to kill an important female in the hero's life in order to turn the hero into the villain.

Both Zoom/Slade a dark mirror of the hero with a near-identical past, but vastly more powerful in physical ability due to the effects of a drug. Indeed. The love interest problems are the same on Supergirl as they are on the Flash though.