I wouldn't go out of my way to marry any of the female champions. Most are caricatures with over-the-top personalities and ridiculous back stories. I would prefer a women who isn't in to totally killing shit and who would just chill, be happy and would do normal stuff with me like talking, coexisting, increasing funds and eventually creating an average family.
I was about to say Sona before I thought of this but she doesn't say anything. How would I know what she was thinking? The sex would be great but that obviously wouldn't last because eventually we all become prunes that are indistinguishable. I'd prefer to be with a prune that I like to be around than be with an actual prune.
We are just talking about marrying. You can just tie her to be a sexlave and unofficially bewaifen any other bro or broad.