Swain with LB and Viktor have the arguably best lores.
Swain and LB don't have good backgrounds, and by the standards the community has these days, their backgrounds would suck.
But Swain and LB have ****tons of other lore behind them. Their judgements, their appearances in the JoJ, they turned these two into quite interesting characters.
There's so much story there, and it has a perfect amount of mystery.
And I think many of the newer champs with bad backgrounds would be equally as good if they would be given more lore.
Viktor just has that something. I like his background.