User blog comment:Goddess of Despair/Thoughts on the First Episode of RWBY and Stuff/@comment-9090085-20130723033432/@comment-9090085-20130723202222

That's... not a good comparison. A better one might be to Hansel a Gretel from Black Lagoon: a pair child murderers who gleefully butcher and torture people past death, yet still have the voices (and personalities) of 10 year-olds. Let's face it, what is Ruby? a Child, with the mannerisms of a child. 

More to the point, is she a really killer? In her own eyes, no. Those things weren't human; they might not even have been alive in the same way Ruby is. Are you a killer because kill mosquitoes? Of course not, they're just annoyances. There is a very real disconnect in peoples minds between killing humans and killing non-humans; an adventurer might not think twice about killing orcs, but will freeze when fighting humans, even though the differences between the two  are largely superficial. Why do you think humans have tried to paint other humans as monsters during wars? So the soldiers will kill without remorse, without thinking they just killed a human being. Ruby don't need to worry about the morality of what she does because she is destroying monsters and demons which have no redeeming qualities whatsoever.

It's interesting you brought out him as a comparison, as he is someone with a large, adult body, I would expect him to have deep, mature voice... but I would not expect a small, young girl to have such a voice. This is your problem, I think: you look at only one aspect of their character, and assume the rest of the character is defined by that trait, without looking at the whole person. Ruby is a bada** fighter, true, but is that all she is? A killing machine? Is that all any fighter is? a one note "KILLKILLKILL" in a gravely voice? That is what is known as a flat character, which is usually dull and uninteresting. A complex character, is someone many, often contradictory traits: Ruby is a fighter, with a great desire to help people, and a starry-eyed fangirls' view of huntresses.

and that's still not getting into intentional vocal dissonance: A giant monster with a child's voice is a lot creepier then a gravel-mouthed one; similarly, your typical creepy girl has an adult voice and mannerisms to contrast their appearance.

Oh, and I've found that most people don't watch anime subbed because the voices are terrible, a surprising number (especially newer shows) actually stay close to the original voices. No, they watch in Japanese so they can tune out the voices. Really, why do they color the subtitles to mach the characters? because it's hard to listen to the voices and read the subtitles at the same time.

(I've watched the same episodes in English, in Japanese with subs, and in Japanese without subs - a language I don't even understand! - to figure this out.)