Damien Darhk - Killed Laurel, was part of the Legion of Doom, and a villain in LoT s3 as well.

Malcom Merlyn - Sabotaged the Queen's Gambit, drugged Thea into killing her, and was part of the Legion of Doom.

Damien, because he killed Laurel.

Damn it, meant to put this gif for Darhk:

In the Invasion Hallucination, Darhk was Sara’s main enemy

I haven’t watched Legends yet so I wouldn’t know.

@TheBelen

Perhaps, one of the mods could help with adding gif.

Maybe but it's ok. I don't get why you aren't allowed to edit an image though. I mean, I get why you can't change tha answer because then you could change what people voted for, but why not the image?

Who knows?