Nothing like a voice that has swagger, sarcasm, and attitude to get a point accross. Whether it's a hero ot villain, a sassy voice is going to bring a healthy dose of confidence and panache to any project.
Does your project call for a capital A attitude that just won't quit? Some characters love telling it like it is (or how they see it), and they won't have anyone messing with their vibe. A sasssy voice is cocky, confident, stylish, and it feels absolutely at home wherever it is. Whether it's talking down Thanos or convincing a particularly stubborn cashier that they've given them the wrong change, a sassy voice has the perfect finger-wagging attitude for every occasion.
Sassy characters. Love 'em, or love to hate 'em, they always have a special place in audiences' hearts. Would Sex and the City have been the same without the inimitable Samantha Jones slyly commenting on everything the other characters did? And how about Robert Downey Jr. as Tony Stark in the Avengers? The man practically embodied sass in everything that he did. The iron Man and avengers saga would definitely not have been the same had it not been for the lively, bold, impetuous spirit of Tony, even in the face of certain destruction, and that's why we love him 9000. If you employ them well,sassy voices can have a place of honor in any project, whether it's artistic, commercial, or internal (hey, who said company videos can't have a little humor in them?).
Confident, bold, lively, stylish, and absolutely in control of its swagger.