Standout Character Seasons: What players usually come off boring... but they have that one season that suggests the edit just hides their true character?

Watching Kaycee on World Championships is FUN. She is snarky in confessionals and clearly has witt and personality. Why did that show up in this ONE season when she usually seems to have so little personality?

And what other people have ONE great character season, but seem super boring on other seasons.