This is the only good question you've put down

I gotta go with Merlyn

He never tried to kill his daughters significant other

I have to go with Damien because he changed after a while and he respect Ray

He didnt change one bit he tried to kill ray and the legends

At the beginning but it changed later on

I think they both loved their daughters a lot, so much so that Damien wanted to take over the world and give it to Nora and see her be happy, and Malcolm was willing to do anything for his daughter. Anything. And bonus, they both died to save their daughters

Yeah but there was something i didnt take into account when voted

What they made their daughters Do

Malcolm made thea kill Sara

Darhk made his daughter a vessel for a demon

Damian

Damien Darhk

I would say Damien. Malcolm drugged his daughter to make her kill a friend of hers who is also her brother's ex. And then he was willing to let her die to keep his power in the League. And then he kidnapped her nephew and gave him to Damien. So, while he did love Tea, he has had quite a few major fuckups.