Back when Sword Art Online II debuted in 2014, the Sword Art Online anime site hosted an awards ceremony to see which SAO character, moment, quote, or etc. deserves an award. For example the best male character is Kirito and the best female character was Asuna. I have these wallpapers here if you want to decorate your desktop with SAO, but if you want one with a specific size, like iPhone or Android, I will leave a link below.
The size format here: