Related to this, I'd include Dishonored (the first one). Especially due to how the game framed the story and events in such a way that at least to me, I couldn't stomach coming home to my character's daughter if I'd been murdering people left and right. A rather unique and heartfelt way to motivate me towards going for the non-lethal approach.

Another game character and fatherly figure I'd mention would be Miller from the Metro games.

Related to this, I'd include Dishonored (the first one). Especially due to how the game framed the story and events in such a way that at least to me, I couldn't stomach coming home to my character's daughter if I'd been murdering people left and right.

Definitely motivated me to go for the non-lethal approach in the game.